diff --git a/lua/colorizer.lua b/lua/colorizer.lua
index f127b19..382636d 100644
--- a/lua/colorizer.lua
+++ b/lua/colorizer.lua
@@ -11,20 +11,34 @@ local nvim_buf_get_lines = vim.api.nvim_buf_get_lines
 local nvim_get_current_buf = vim.api.nvim_get_current_buf
 local band, lshift, bor, tohex = bit.band, bit.lshift, bit.bor, bit.tohex
 local rshift = bit.rshift
-local floor = math.floor
+local floor, min, max = math.floor, math.min, math.max
 
 local COLOR_MAP
 local COLOR_TRIE
+local COLOR_NAME_MINLEN, COLOR_NAME_MAXLEN
+local COLOR_NAME_SETTINGS = {
+	lowercase = true;
+	strip_digits = true;
+}
 
 --- Setup the COLOR_MAP and COLOR_TRIE
 local function initialize_trie()
 	if not COLOR_TRIE then
-		COLOR_MAP = nvim.get_color_map()
+		COLOR_MAP = {}
 		COLOR_TRIE = Trie()
-
-		for k, v in pairs(COLOR_MAP) do
-			COLOR_MAP[k] = tohex(v, 6)
-			COLOR_TRIE:insert(k)
+		for k, v in pairs(nvim.get_color_map()) do
+			if not (COLOR_NAME_SETTINGS.strip_digits and k:match("%d+$")) then
+				COLOR_NAME_MINLEN = COLOR_NAME_MINLEN and min(#k, COLOR_NAME_MINLEN) or #k
+				COLOR_NAME_MAXLEN = COLOR_NAME_MAXLEN and max(#k, COLOR_NAME_MAXLEN) or #k
+				local rgb_hex = tohex(v, 6)
+				COLOR_MAP[k] = rgb_hex
+				COLOR_TRIE:insert(k)
+				if COLOR_NAME_SETTINGS.lowercase then
+					local lowercase = k:lower()
+					COLOR_MAP[lowercase] = rgb_hex
+					COLOR_TRIE:insert(lowercase)
+				end
+			end
 		end
 	end
 end
@@ -41,18 +55,28 @@ local function merge(...)
 end
 
 local DEFAULT_OPTIONS = {
-	RGB      = true;         -- #RGB hex codes
-	RRGGBB   = true;         -- #RRGGBB hex codes
-	names    = true;         -- "Name" codes like Blue
-	RRGGBBAA = false;        -- #RRGGBBAA hex codes
-	rgb_fn   = false;        -- CSS rgb() and rgba() functions
-	hsl_fn   = false;        -- CSS hsl() and hsla() functions
-	css      = false;        -- Enable all CSS features: rgb_fn, hsl_fn, names, RGB, RRGGBB
-	css_fn   = false;        -- Enable all CSS *functions*: rgb_fn, hsl_fn
+	RGB       = true;         -- #RGB hex codes
+	RRGGBB    = true;         -- #RRGGBB hex codes
+	names     = true;         -- "Name" codes like Blue
+	RRGGBBAA  = false;        -- #RRGGBBAA hex codes
+	rgb_fn    = false;        -- CSS rgb() and rgba() functions
+	hsl_fn    = false;        -- CSS hsl() and hsla() functions
+	css       = false;        -- Enable all CSS features: rgb_fn, hsl_fn, names, RGB, RRGGBB
+	css_fn    = false;        -- Enable all CSS *functions*: rgb_fn, hsl_fn
+	lowercase = false;        -- Enable lowercase "Name" codes
 	-- Available modes: foreground, background
 	mode     = 'background'; -- Set the display mode.
 }
 
+-- -- TODO use rgb as the return value from the matcher functions
+-- -- instead of the rgb_hex. Can be the highlight key as well
+-- -- when you shift it left 8 bits. Use the lower 8 bits for
+-- -- indicating which highlight mode to use.
+-- ffi.cdef [[
+-- typedef struct { uint8_t r, g, b; } colorizer_rgb;
+-- ]]
+-- local rgb_t = ffi.typeof 'colorizer_rgb'
+
 -- Create a lookup table where the bottom 4 bits are used to indicate the
 -- category and the top 4 bits are the hex value of the ASCII byte.
 local BYTE_CATEGORY = ffi.new 'uint8_t[256]'
@@ -86,12 +110,12 @@ end
 local function byte_is_hex(byte)
 	return band(BYTE_CATEGORY[byte], CATEGORY_HEX) ~= 0
 end
-
+local function byte_is_alpha(byte)
+	return band(BYTE_CATEGORY[byte], CATEGORY_ALPHA) ~= 0
+end
 local function byte_is_alphanumeric(byte)
-	local category = BYTE_CATEGORY[byte]
-	return band(category, CATEGORY_ALPHANUM) ~= 0
+	return band(BYTE_CATEGORY[byte], CATEGORY_ALPHANUM) ~= 0
 end
-
 local function parse_hex(b)
 	return rshift(BYTE_CATEGORY[b], 4)
 end
@@ -144,15 +168,21 @@ local function hsl_to_rgb(h, s, l)
 	return 255*hue_to_rgb(p, q, h + 1/3), 255*hue_to_rgb(p, q, h), 255*hue_to_rgb(p, q, h - 1/3)
 end
 
-local function name_parser(line, i)
+local function color_name_parser(line, i, allow_lowercase)
+	-- Disallow prefixing with an alphanumeric character
 	if i > 1 and byte_is_alphanumeric(line:byte(i-1)) then
 		return
 	end
-	local prefix = COLOR_TRIE:longest_prefix(line:sub(i))
+	if #line < i + COLOR_NAME_MINLEN - 1 then return end
+	if not allow_lowercase then
+		local b = line:byte(i)
+		-- This means it's lowercase.
+		if byte_is_alpha(b) and b >= 0x61 then return end
+	end
+	local prefix = COLOR_TRIE:longest_prefix(line, i)
 	if prefix then
-		-- Check if there is a letter here so as to disallow matching here.
+		-- Disallow trailing alphanumeric characters.
 		-- Take the Blue out of Blueberry
-		-- Line end or non-letter.
 		local next_byte_index = i + #prefix
 		if #line >= next_byte_index and byte_is_alphanumeric(line:byte(next_byte_index)) then
 			return
@@ -174,7 +204,7 @@ local function rgb_hex_parser(line, i, minlen, maxlen)
 	local n = j + maxlen
 	local alpha
 	local v = 0
-	while j <= math.min(n, #line) do
+	while j <= min(n, #line) do
 		local b = line:byte(j)
 		if not byte_is_hex(b) then break end
 		if j - i >= 7 then
@@ -205,23 +235,22 @@ end
 -- Things like pumblend might be useful here.
 local css_fn = {}
 do
-	local css_rgb_fn_minimum_length = #'rgb(0,0,0)' - 1
-	local css_rgba_fn_minimum_length = #'rgba(0,0,0,0)' - 1
-	local css_hsl_fn_minimum_length = #'hsl(0,0%,0%)' - 1
-	local css_hsla_fn_minimum_length = #'hsla(0,0%,0%,0)' - 1
+	local CSS_RGB_FN_MINIMUM_LENGTH = #'rgb(0,0,0)' - 1
+	local CSS_RGBA_FN_MINIMUM_LENGTH = #'rgba(0,0,0,0)' - 1
+	local CSS_HSL_FN_MINIMUM_LENGTH = #'hsl(0,0%,0%)' - 1
+	local CSS_HSLA_FN_MINIMUM_LENGTH = #'hsla(0,0%,0%,0)' - 1
 	function css_fn.rgb(line, i)
-		if #line < i + css_rgb_fn_minimum_length then return end
+		if #line < i + CSS_RGB_FN_MINIMUM_LENGTH then return end
 		local r, g, b, match_end = line:sub(i):match("^rgb%(%s*(%d+%%?)%s*,%s*(%d+%%?)%s*,%s*(%d+%%?)%s*%)()")
 		if not match_end then return end
 		r = percent_or_hex(r) if not r then return end
 		g = percent_or_hex(g) if not g then return end
 		b = percent_or_hex(b) if not b then return end
-		local rgb_hex = ("%02x%02x%02x"):format(r,g,b)
-		if #rgb_hex ~= 6 then return end
+		local rgb_hex = tohex(bor(lshift(r, 16), lshift(g, 8), b), 6)
 		return match_end - 1, rgb_hex
 	end
 	function css_fn.hsl(line, i)
-		if #line < i + css_hsl_fn_minimum_length then return end
+		if #line < i + CSS_HSL_FN_MINIMUM_LENGTH then return end
 		local h, s, l, match_end = line:sub(i):match("^hsl%(%s*(%d+)%s*,%s*(%d+)%%%s*,%s*(%d+)%%%s*%)()")
 		if not match_end then return end
 		h = tonumber(h) if h > 360 then return end
@@ -229,24 +258,22 @@ do
 		l = tonumber(l) if l > 100 then return end
 		local r, g, b = hsl_to_rgb(h/360, s/100, l/100)
 		if r == nil or g == nil or b == nil then return end
-		local rgb_hex = ("%02x%02x%02x"):format(floor(r), floor(g), floor(b))
-		if #rgb_hex ~= 6 then return end
+		local rgb_hex = tohex(bor(lshift(floor(r), 16), lshift(floor(g), 8), floor(b)), 6)
 		return match_end - 1, rgb_hex
 	end
 	function css_fn.rgba(line, i)
-		if #line < i + css_rgba_fn_minimum_length then return end
+		if #line < i + CSS_RGBA_FN_MINIMUM_LENGTH then return end
 		local r, g, b, a, match_end = line:sub(i):match("^rgba%(%s*(%d+%%?)%s*,%s*(%d+%%?)%s*,%s*(%d+%%?)%s*,%s*([.%d]+)%s*%)()")
 		if not match_end then return end
 		a = tonumber(a) if not a or a > 1 then return end
 		r = percent_or_hex(r) if not r then return end
 		g = percent_or_hex(g) if not g then return end
 		b = percent_or_hex(b) if not b then return end
-		local rgb_hex = ("%02x%02x%02x"):format(floor(r*a), floor(g*a), floor(b*a))
-		if #rgb_hex ~= 6 then return end
+		local rgb_hex = tohex(bor(lshift(floor(r*a), 16), lshift(floor(g*a), 8), floor(b*a)), 6)
 		return match_end - 1, rgb_hex
 	end
 	function css_fn.hsla(line, i)
-		if #line < i + css_hsla_fn_minimum_length then return end
+		if #line < i + CSS_HSLA_FN_MINIMUM_LENGTH then return end
 		local h, s, l, a, match_end = line:sub(i):match("^hsla%(%s*(%d+)%s*,%s*(%d+)%%%s*,%s*(%d+)%%%s*,%s*([.%d]+)%s*%)()")
 		if not match_end then return end
 		a = tonumber(a) if not a or a > 1 then return end
@@ -255,8 +282,7 @@ do
 		l = tonumber(l) if l > 100 then return end
 		local r, g, b = hsl_to_rgb(h/360, s/100, l/100)
 		if r == nil or g == nil or b == nil then return end
-		local rgb_hex = ("%02x%02x%02x"):format(floor(r*a), floor(g*a), floor(b*a))
-		if #rgb_hex ~= 6 then return end
+		local rgb_hex = tohex(bor(lshift(floor(r*a), 16), lshift(floor(g*a), 8), floor(b*a)), 6)
 		return match_end - 1, rgb_hex
 	end
 end
@@ -353,20 +379,22 @@ end
 
 local MATCHER_CACHE = {}
 local function make_matcher(options)
-	local enable_names    = options.css or options.names
-	local enable_RGB      = options.css or options.RGB
-	local enable_RRGGBB   = options.css or options.RRGGBB
-	local enable_RRGGBBAA = options.css or options.RRGGBBAA
-	local enable_rgb      = options.css or options.css_fns or options.rgb_fn
-	local enable_hsl      = options.css or options.css_fns or options.hsl_fn
+	local enable_names     = options.css or options.names
+	local enable_RGB       = options.css or options.RGB
+	local enable_RRGGBB    = options.css or options.RRGGBB
+	local enable_RRGGBBAA  = options.css or options.RRGGBBAA
+	local enable_rgb       = options.css or options.css_fns or options.rgb_fn
+	local enable_hsl       = options.css or options.css_fns or options.hsl_fn
+	local enable_lowercase = options.css or options.lowercase
 
 	local matcher_key = bor(
-		lshift(enable_names    and 1 or 0, 0),
-		lshift(enable_RGB      and 1 or 0, 1),
-		lshift(enable_RRGGBB   and 1 or 0, 2),
-		lshift(enable_RRGGBBAA and 1 or 0, 3),
-		lshift(enable_rgb      and 1 or 0, 4),
-		lshift(enable_hsl      and 1 or 0, 5))
+		lshift(enable_names     and 1 or 0, 0),
+		lshift(enable_RGB       and 1 or 0, 1),
+		lshift(enable_RRGGBB    and 1 or 0, 2),
+		lshift(enable_RRGGBBAA  and 1 or 0, 3),
+		lshift(enable_rgb       and 1 or 0, 4),
+		lshift(enable_hsl       and 1 or 0, 5),
+		lshift(enable_lowercase and 1 or 0, 6))
 
 	if matcher_key == 0 then return end
 
@@ -377,15 +405,17 @@ local function make_matcher(options)
 
 	local loop_matchers = {}
 	if enable_names then
-		table.insert(loop_matchers, name_parser)
+		table.insert(loop_matchers, function(line, i)
+			return color_name_parser(line, i, enable_lowercase)
+		end)
 	end
 	do
 		local valid_lengths = {[3] = enable_RGB, [6] = enable_RRGGBB, [8] = enable_RRGGBBAA}
 		local minlen, maxlen
 		for k, v in pairs(valid_lengths) do
 			if v then
-				minlen = math.min(k, minlen or 99)
-				maxlen = math.max(k, maxlen or 0)
+				minlen = minlen and min(k, minlen) or k
+				maxlen = maxlen and max(k, maxlen) or k
 			end
 		end
 		if minlen then
@@ -535,19 +565,25 @@ end
 -- @param[opt={'*'}] filetypes A table/array of filetypes to selectively enable and/or customize. By default, enables all filetypes.
 -- @tparam[opt] {[string]=string} default_options Default options to apply for the filetypes enable.
 -- @usage require'colorizer'.setup()
-local function setup(filetypes, default_options)
+local function setup(filetypes, user_default_options, global_configuration)
 	if not nvim.o.termguicolors then
 		nvim.err_writeln("&termguicolors must be set")
 		return
 	end
-	initialize_trie()
 	FILETYPE_OPTIONS = {}
 	SETUP_SETTINGS = {
 		exclusions = {};
-		default_options = merge(DEFAULT_OPTIONS, default_options or {});
+		default_options = merge(DEFAULT_OPTIONS, user_default_options or {});
+	}
+	global_configuration = global_configuration or {
+		lowercase = true;
+		on_enter = false;
 	}
-	-- This is just in case I accidentally reference the wrong thing here.
-	default_options = SETUP_SETTINGS.default_options
+	if type(global_configuration.lowercase) == 'boolean' then
+		COLOR_NAME_SETTINGS.lowercase = global_configuration.lowercase
+	end
+	-- Initialize this AFTER setting COLOR_NAME_SETTINGS
+	initialize_trie()
 	function COLORIZER_SETUP_HOOK()
 		local filetype = nvim.bo.filetype
 		if SETUP_SETTINGS.exclusions[filetype] then
@@ -558,7 +594,9 @@ local function setup(filetypes, default_options)
 	end
 	nvim.ex.augroup("ColorizerSetup")
 	nvim.ex.autocmd_()
-	-- nvim.ex.autocmd("VimEnter * lua COLORIZER_SETUP_HOOK()")
+	if global_configuration.on_enter then
+		nvim.ex.autocmd("VimEnter * lua COLORIZER_SETUP_HOOK()")
+	end
 	if not filetypes then
 		nvim.ex.autocmd("FileType * lua COLORIZER_SETUP_HOOK()")
 	else
diff --git a/lua/trie.lua b/lua/trie.lua
index 9d84487..f2369d6 100644
--- a/lua/trie.lua
+++ b/lua/trie.lua
@@ -14,11 +14,6 @@
 -- You should have received a copy of the GNU General Public License
 -- along with this program.  If not, see <http://www.gnu.org/licenses/>.
 local ffi = require 'ffi'
-local bit = require 'bit'
-
-local bnot = bit.bnot
-local band, bor, bxor = bit.band, bit.bor, bit.bxor
-local lshift, rshift, rol = bit.lshift, bit.rshift, bit.rol
 
 ffi.cdef [[
 struct Trie {
@@ -33,58 +28,27 @@ local Trie_t = ffi.typeof('struct Trie')
 local Trie_ptr_t = ffi.typeof('$ *', Trie_t)
 local Trie_size = ffi.sizeof(Trie_t)
 
-local function byte_to_index(b)
-	-- 0-9 starts at string.byte('0') == 0x30 == 48 == 0b0011_0000
-	-- A-Z starts at string.byte('A') == 0x41 == 65 == 0b0100_0001
-	-- a-z starts at string.byte('a') == 0x61 == 97 == 0b0110_0001
-
-	-- This works for mapping characters to
-	-- 0-9 A-Z a-z in that order
-	-- Letters have bit 0x40 set, so we use that as an indicator for
-	-- an additional offset from the space of the digits, and then
-	-- add the 10 allocated for the range of digits.
-	-- Then, within that indicator for letters, we subtract another
-	-- (65 - 97) which is the difference between lower and upper case
-	-- and add back another 26 to allocate for the range of uppercase
-	-- letters.
-	-- return b - 0x30
-	-- 	+ rshift(b, 6) * (
-	-- 		0x30 - 0x41
-	-- 		+ 10
-	-- 		+ band(1, rshift(b, 5)) * (
-	-- 			0x61 - 0x41
-	-- 			+ 26
-	-- 		))
-	return b - 0x30 - rshift(b, 6) * (7 + band(1, rshift(b, 5)) * 6)
-end
-
-local function insensitive_byte_to_index(b)
-	-- return b - 0x30
-	-- 	+ rshift(b, 6) * (
-	-- 		0x30 - 0x61
-	-- 		+ 10
-	-- 	)
-	b = bor(b, 0x20)
-	return b - 0x30 - rshift(b, 6) * 39
-end
-
-local function verify_byte_to_index()
-	local chars = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
-	for i = 1, #chars do
-		local c = chars:sub(i,i)
-		local index = byte_to_index(string.byte(c))
-		assert((i-1) == index, vim.inspect{index=index,c=c})
-	end
-end
-
 local function trie_create()
 	local ptr = ffi.C.malloc(Trie_size)
 	ffi.fill(ptr, Trie_size)
 	return ffi.cast(Trie_ptr_t, ptr)
 end
 
+local function trie_destroy(trie)
+	if trie == nil then
+		return
+	end
+	for i = 0, 61 do
+		local child = trie.character[i]
+		if child ~= nil then
+			trie_destroy(child)
+		end
+	end
+	ffi.C.free(trie)
+end
+
 local INDEX_LOOKUP_TABLE = ffi.new 'uint8_t[256]'
-local CHAR_LOOKUP_TABLE = ffi.new('char[62]', '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz')
+local CHAR_LOOKUP_TABLE = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz'
 do
 	local b = string.byte
 	for i = 0, 255 do
@@ -117,10 +81,10 @@ local function trie_insert(trie, value)
 	return node, trie
 end
 
-local function trie_search(trie, value)
+local function trie_search(trie, value, start)
 	if trie == nil then return false end
 	local node = trie
-	for i = 1, #value do
+	for i = (start or 1), #value do
 		local index = INDEX_LOOKUP_TABLE[value:byte(i)]
 		if index == 255 then
 			return
@@ -134,12 +98,15 @@ local function trie_search(trie, value)
 	return node.is_leaf
 end
 
-local function trie_longest_prefix(trie, value)
+local function trie_longest_prefix(trie, value, start)
 	if trie == nil then return false end
+	-- insensitive = insensitive and 0x20 or 0
+	start = start or 1
 	local node = trie
 	local last_i = nil
-	for i = 1, #value do
+	for i = start, #value do
 		local index = INDEX_LOOKUP_TABLE[value:byte(i)]
+--		local index = INDEX_LOOKUP_TABLE[bor(insensitive, value:byte(i))]
 		if index == 255 then
 			break
 		end
@@ -153,7 +120,12 @@ local function trie_longest_prefix(trie, value)
 		node = child
 	end
 	if last_i then
-		return value:sub(1, last_i)
+		-- Avoid a copy if the whole string is a match.
+		if start == 1 and last_i == #value then
+			return value
+		else
+			return value:sub(start, last_i)
+		end
 	end
 end
 
@@ -168,7 +140,7 @@ end
 
 local function index_to_char(index)
 	if index < 0 or index > 61 then return end
-	return CHAR_LOOKUP_TABLE[index]
+	return CHAR_LOOKUP_TABLE:sub(index+1, index+1)
 end
 
 local function trie_as_table(trie)
@@ -190,7 +162,7 @@ local function trie_as_table(trie)
 	}
 end
 
-local function print_trie_table(s)
+local function print_trie_table(s, thicc)
 	local mark
 	if not s then
 		return {'nil'}
@@ -209,44 +181,48 @@ local function print_trie_table(s)
 	end
 	local lines = {}
 	for _, child in ipairs(s.children) do
-		local child_lines = print_trie_table(child)
+		local child_lines = print_trie_table(child, thicc)
 		for _, child_line in ipairs(child_lines) do
 			table.insert(lines, child_line)
 		end
 	end
-	for i, v in ipairs(lines) do
-		if v:match("^[%w%d]") then
+	local child_count = 0
+	for i, line in ipairs(lines) do
+		local line_parts = {}
+		-- if line[1] and line[1]:match("^%w") then
+		if line:match("^%w") then
+			child_count = child_count + 1
 			if i == 1 then
-				lines[i] = mark.."─"..v
-			elseif i == #lines then
-				lines[i] = "└──"..v
+				line_parts = {mark}
+			elseif i == #lines or child_count == #s.children then
+				line_parts = {"└─"}
 			else
-				lines[i] = "├──"..v
+				line_parts = {"├─"}
 			end
+			if thicc then table.insert(line_parts, "─") end
 		else
 			if i == 1 then
-				lines[i] = mark.."─"..v
-			elseif #s.children > 1 then
-				lines[i] = "│  "..v
+				line_parts = {mark}
+				if thicc then table.insert(line_parts, "─") end
+			elseif #s.children > 1 and child_count ~= #s.children then
+				line_parts = {thicc and "│  " or "│ "}
 			else
-				lines[i] = "   "..v
+				line_parts = {thicc and "   " or "  "}
 			end
 		end
+		table.insert(line_parts, line)
+		-- lines[i] = vim.tbl_flatten(line_parts)
+		lines[i] = table.concat(line_parts)
 	end
 	return lines
 end
 
-local function trie_destroy(trie)
+local function trie_to_string(trie, thicc)
 	if trie == nil then
-		return
+		return 'nil'
 	end
-	for i = 0, 61 do
-		local child = trie.character[i]
-		if child ~= nil then
-			trie_destroy(child)
-		end
-	end
-	ffi.C.free(trie)
+	local as_table = trie_as_table(trie)
+	return table.concat(print_trie_table(as_table, thicc), '\n')
 end
 
 local Trie_mt = {
@@ -262,13 +238,9 @@ local Trie_mt = {
 		search = trie_search;
 		longest_prefix = trie_longest_prefix;
 		extend = trie_extend;
+		to_string = trie_to_string;
 	};
-	__tostring = function(trie)
-		if trie == nil then
-			return 'nil'
-		end
-		return table.concat(print_trie_table(trie_as_table(trie)), '\n')
-	end;
+	__tostring = trie_to_string;
 	__gc = trie_destroy;
 }
 
diff --git a/test/expectation.txt b/test/expectation.txt
index 915d4de..7813fe8 100644
--- a/test/expectation.txt
+++ b/test/expectation.txt
@@ -8,9 +8,9 @@ require'colorizer'.attach_to_buffer(0, {css=true})
  #F0F
  #FF00FF
  #FFF00F8F
- #F0F 1
- #FF00FF 1
- #FFF00F8F 1
+ #F0F #F00
+ #FF00FF #F00
+ #FFF00F8F #F00
 Blue Gray LightBlue Gray100 White
 White
 #def
@@ -22,6 +22,7 @@ hsl(300,50%,50%)
 hsla(300,50%,50%,0.5)
 hsla(300,50%,50%,1.0000000000000001)
 hsla(360,50%,50%,1.0000000000000001)
+blue gray lightblue gray100 white gold blue
 ]]
 
 --[[ FAIL
diff --git a/test/print-trie.lua b/test/print-trie.lua
new file mode 100644
index 0000000..09059e8
--- /dev/null
+++ b/test/print-trie.lua
@@ -0,0 +1,36 @@
+-- TODO this is kinda shitty
+local function dirname(str,sep)
+	sep=sep or'/'
+	return str:match("(.*"..sep..")")
+end
+
+local script_dir = dirname(arg[0])
+package.path = script_dir.."/../lua/?.lua;"..package.path
+
+local Trie = require 'trie'
+local nvim = require 'nvim'
+
+local tohex = bit.tohex
+local min, max = math.min, math.max
+
+local COLOR_NAME_SETTINGS = {
+	lowercase = false;
+	strip_digits = true;
+}
+COLOR_MAP = {}
+COLOR_TRIE = Trie()
+for k, v in pairs(nvim.get_color_map()) do
+	if not (COLOR_NAME_SETTINGS.strip_digits and k:match("%d+$")) then
+		COLOR_NAME_MINLEN = COLOR_NAME_MINLEN and min(#k, COLOR_NAME_MINLEN) or #k
+		COLOR_NAME_MAXLEN = COLOR_NAME_MAXLEN and max(#k, COLOR_NAME_MAXLEN) or #k
+		COLOR_MAP[k] = tohex(v, 6)
+		COLOR_TRIE:insert(k)
+		if COLOR_NAME_SETTINGS.lowercase then
+			local lowercase = k:lower()
+			COLOR_MAP[lowercase] = tohex(v, 6)
+			COLOR_TRIE:insert(lowercase)
+		end
+	end
+end
+
+print(COLOR_TRIE)