diff --git a/CHANGELOG.md b/CHANGELOG.md
index 1adfc34..f43df74 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -1,5 +1,14 @@
 # Changelog
 
+#### 2.3.0
+
+- Update groovy unresolved reference color
+- Improves syntax highlighting for the following languages:
+    - Python
+    - Bash
+    - reStructuredText
+    - Buildout config
+
 #### 2.2.1
 
 - Update plugin description to pull from readme
diff --git a/scripts/config/theme.yaml b/scripts/config/theme.yaml
index 5556820..bc48e88 100644
--- a/scripts/config/theme.yaml
+++ b/scripts/config/theme.yaml
@@ -43,6 +43,11 @@ colors:
   WHITESPACES_MODIFIED_LINES_COLOR: dark
 inheriting-attributes:
   ANNOTATION_NAME_ATTRIBUTES: DEFAULT_METADATA
+  BASH.FUNCTION_CALL: DEFAULT_FUNCTION_CALL
+  BASH.HERE_DOC_END: DEFAULT_KEYWORD
+  BASH.HERE_DOC_START: DEFAULT_KEYWORD
+  BASH.HERE_DOC: DEFAULT_STRING
+  BASH.REDIRECTION: DEFAULT_OPERATION_SIGN
   Class: CLASS_NAME_ATTRIBUTES
   CONSOLE_BLACK_OUTPUT: CONSOLE_NORMAL_OUTPUT
   CSS.IMPORTANT: DEFAULT_KEYWORD
@@ -73,9 +78,12 @@ inheriting-attributes:
   PROPERTIES.INVALID_STRING_ESCAPE: DEFAULT_INVALID_STRING_ESCAPE
   PROPERTIES.KEY_VALUE_SEPARATOR: DEFAULT_OPERATION_SIGN
   PROPERTIES.VALID_STRING_ESCAPE: DEFAULT_VALID_STRING_ESCAPE
+  PY.KEYWORD: DEFAULT_KEYWORD
+  PY.STRING.B: DEFAULT_STRING
   REGEXP.ESC_CHARACTER: DEFAULT_VALID_STRING_ESCAPE
   REGEXP.QUOTE_CHARACTER: DEFAULT_VALID_STRING_ESCAPE
   REGEXP.REDUNDANT_ESCAPE: DEFAULT_VALID_STRING_ESCAPE
+  REST.INLINE: DEFAULT_IDENTIFIER
   SASS_COMMENT: CSS.COMMENT
   Static method access: STATIC_METHOD_ATTRIBUTES
   Static property reference ID: STATIC_FINAL_FIELD_ATTRIBUTES
@@ -94,6 +102,13 @@ attributes:
   APACHE_CONFIG.IDENTIFIER: c679dd
   BAD_CHARACTER:
     background: 9b3636
+  BASH.BINARY_DATA: ''
+  BASH.CONDITIONAL: ''
+  BASH.EXTERNAL_COMMAND: malibu
+  BASH.SHEBANG:
+    foreground: dark
+    bold: always
+    italic: theme
   BOOKMARKS_ATTRIBUTES: {}
   BREADCRUMBS_CURRENT:
     foreground: lightWhite
@@ -105,13 +120,7 @@ attributes:
   BREADCRUMBS_INACTIVE: lightWhite
   BREAKPOINT_ATTRIBUTES:
     background: 743d3d
-  BUILDOUT.KEY: c679dd
-  BUILDOUT.KEY_VALUE_SEPARATOR: a6b2c0
-  BUILDOUT.LINE_COMMENT:
-    foreground: 59626f
-    italic: theme
-  BUILDOUT.SECTION_NAME: d2945d
-  BUILDOUT.VALUE: green
+  BUILDOUT.KEY: purple
   CLASS_REFERENCE: e5c17c
   Clojure Atom: c679dd
   Clojure Character: green
@@ -513,42 +522,28 @@ attributes:
   PUPPET_SQ_STRING: green
   PUPPET_STRING: green
   PUPPET_VARIABLE_INTERPOLATION: green
-  PY.BUILTIN_NAME: 57b6c2
+  PY.ANNOTATION: fountainBlue
+  PY.BUILTIN_NAME: fountainBlue
   PY.CLASS_DEFINITION: e5c17c
-  PY.DECORATOR: malibu
-  PY.DOC_COMMENT: 98c476
-  PY.FUNC_DEFINITION: malibu
-  PY.INVALID_STRING_ESCAPE:
-    foreground: 68e868
-    background: '481515'
-  PY.KEYWORD: c679dd
-  PY.LINE_COMMENT:
-    foreground: 59626f
-    italic: theme
-  PY.NUMBER: d2945d
-  PY.PARAMETER: whiskey
+  PY.DECORATOR: chalky
+  PY.PREDEFINED_DEFINITION: malibu
   PY.PREDEFINED_USAGE: coral
-  PY.SELF_PARAMETER: coral
+  PY.SELF_PARAMETER:
+    foreground: purple
+    italic: theme
   PY.STRING: green
-  PY.VALID_STRING_ESCAPE: 57b6c2
   REGEXP.BRACES: whiskey
   REGEXP.BRACKETS: whiskey
   REGEXP.CHAR_CLASS: fountainBlue
   REGEXP.META: purple
   REGEXP.PARENTHS: fountainBlue
-  REST.EXPLICIT: c679dd
-  REST.FIELD: c679dd
+  REST.EXPLICIT: purple
+  REST.FIELD: purple
   REST.FIXED:
-    background: 48485f
-  REST.INLINE:
-    background: '273627'
+    background: 3d424b
   REST.INTERPRETED:
-    background: 4d5d3d
-  REST.LINE_COMMENT:
-    foreground: 59626f
-    italic: theme
-  REST.REF.NAME: green
-  REST.SECTION.HEADER: d2945d
+    background: 3c4b33
+  REST.SECTION.HEADER: fountainBlue
   RHTML_COMMENT_ID:
     foreground: 59626f
     italic: theme