diff --git a/packages/core/engine/defaults.ts b/packages/core/engine/defaults.ts
index e8068f6..3d7caf3 100644
--- a/packages/core/engine/defaults.ts
+++ b/packages/core/engine/defaults.ts
@@ -1,4 +1,4 @@
-import { UmbraScheme, UmbraSettings } from './types'
+import { UmbraInput, UmbraSettings } from './types'
 
 export const defaultSettings: UmbraSettings = {
   readability: 10,
@@ -8,8 +8,9 @@ export const defaultSettings: UmbraSettings = {
   tints: [5, 10, 10, 10, 15, 15, 25, 15, 15, 15, 15, 25]
 }
 
-export const defaultScheme: UmbraScheme = {
+export const defaultScheme: UmbraInput = {
   background: '#090233',
   foreground: '#ff5555',
-  accents: ['#5200ff']
+  accents: ['#5200ff'],
+  settings: defaultSettings
 }
diff --git a/packages/core/engine/generator.ts b/packages/core/engine/generator.ts
index 0362413..670e854 100644
--- a/packages/core/engine/generator.ts
+++ b/packages/core/engine/generator.ts
@@ -60,7 +60,7 @@ function replaceAtIndex(array: (number | string)[], index: number, value: string
 function putAccentInRange(adjusted: UmbraAdjusted, accent: Accent | string, input: UmbraInput) {
   const isString = typeof accent === 'string'
   const color = isString ? accent : accent.color
-  const insertion = input.settings.insertion
+  const insertion = input.settings?.insertion
 
   const fallback = rangeValues(adjusted, input.settings) || []
   const range = isString ? fallback : rangeValues(adjusted, accent) || fallback
diff --git a/packages/core/engine/index.ts b/packages/core/engine/index.ts
index afbc980..bb1b718 100644
--- a/packages/core/engine/index.ts
+++ b/packages/core/engine/index.ts
@@ -1,6 +1,6 @@
 import { colord } from 'colord'
 import { defaultSettings, defaultScheme } from './defaults'
-import type { UmbraScheme, UmbraSettings, UmbraInput, UmbraRange } from './types'
+import type { UmbraSettings, UmbraInput, UmbraRange } from './types'
 
 import { format, Formater, UmbraOutputs, AttachProps } from './primitives/format'
 import { inverse, isDark } from './primitives/scheme'
@@ -13,31 +13,23 @@ interface ApplyProps {
   formater?: Formater
   alias?: Alias | boolean
 }
-interface RootSettings extends UmbraSettings {
-  inversed?: UmbraInput
-}
 
-export function umbra(scheme = defaultScheme, settings?: RootSettings) {
-  const input = umbraInput({ scheme, settings })
+export function umbra(scheme = defaultScheme, inversedScheme?: UmbraInput) {
+  const input = umbraInput(scheme)
   const adjustment = umbraAdjust(input.settings, scheme)
-  const output = umbraGenerate(input, adjustment)
-  return umbraHydrate(input, output)
+  return umbraHydrate({
+    input,
+    output: umbraGenerate(input, adjustment),
+    inversed: umbraInput(inversedScheme)
+  })
 }
 
-function umbraInput({
-  scheme = defaultScheme,
-  settings
-}: {
-  scheme?: UmbraScheme
-  settings?: RootSettings
-}): UmbraInput {
-  const { inversed, ...rest } = settings || {}
+function umbraInput(scheme = defaultScheme) {
   return {
-    scheme,
-    inversed: inversed,
+    ...scheme,
     settings: {
       ...defaultSettings,
-      ...rest
+      ...scheme.settings
     }
   }
 }
@@ -70,28 +62,40 @@ export interface Umbra {
   inverse: () => Umbra
 }
 
-export function umbraHydrate(input: UmbraInput, output: UmbraRange[]): Umbra {
+function getTarget(target?: string | HTMLElement | null) {
+  const targetIsString = typeof target === 'string'
+  const targetIsElement = target instanceof HTMLElement || target === null
+  return target
+    ? {
+        element: targetIsElement ? target : undefined,
+        selector: targetIsString ? target : undefined
+      }
+    : undefined
+}
+
+export function umbraHydrate({
+  input,
+  output,
+  inversed
+}: {
+  input: UmbraInput
+  output: UmbraRange[]
+  inversed?: UmbraInput
+}): Umbra {
   const apply = (target?: string | HTMLElement | null, props?: ApplyProps) => {
     const { alias, formater } = props || {}
-    const targetIsString = typeof target === 'string'
-    const targetIsElement = target instanceof HTMLElement || target === null
     return format({ output, formater, input }).attach({
       alias,
-      target: target
-        ? {
-            element: targetIsElement ? target : undefined,
-            selector: targetIsString ? target : undefined
-          }
-        : undefined
+      target: getTarget(target)
     })
   }
 
   return {
     input,
     output,
-    isDark: () => isDark(input.scheme),
+    isDark: () => isDark(input),
     format: (formater?: Formater) => format({ output, formater, input }),
-    inverse: () => umbra(inverse(input).scheme, input.settings),
+    inverse: () => umbra(inverse(input, inversed), input),
     apply
   }
 }
diff --git a/packages/core/engine/primitives/scheme.ts b/packages/core/engine/primitives/scheme.ts
index 8e91262..370a0bd 100644
--- a/packages/core/engine/primitives/scheme.ts
+++ b/packages/core/engine/primitives/scheme.ts
@@ -1,21 +1,26 @@
 import { colord, Colord } from 'colord'
-import type { UmbraInput, UmbraScheme, UmbraAdjusted } from '../types'
+import type { UmbraInput, UmbraAdjusted } from '../types'
 import { increaseContrastUntil, getReadability, getReadable, mostReadable } from './color'
 
 function inverseValidator(theme: UmbraInput) {
-  const fgDark = colord(theme.scheme.foreground).isDark()
-  const bgDark = colord(theme.scheme.background).isDark()
+  const fgDark = colord(theme.foreground).isDark()
+  const bgDark = colord(theme.background).isDark()
 
-  const background = colord(theme.scheme.background)
-  const foreground = colord(theme.scheme.foreground)
+  const background = colord(theme.background)
+  const foreground = colord(theme.foreground)
   const readability = theme.settings?.readability
 
-  if (fgDark !== bgDark) return {}
+  if (fgDark !== bgDark)
+    return {
+      background: theme.foreground,
+      foreground: theme.background
+    }
+
   const fg = getReadable({ foreground, background, readability })
   if (fg.isDark() !== bgDark) {
     return {
       background: fg.toRgbString(),
-      foreground: theme.scheme.background
+      foreground: theme.background
     }
   }
 
@@ -39,37 +44,19 @@ function inverseValidator(theme: UmbraInput) {
 
   return {
     background: createInvertedFlippingReadability(),
-    foreground: theme.scheme.foreground
-  }
-}
-
-function basicInverse(scheme: UmbraScheme): UmbraScheme {
-  return {
-    ...scheme,
-    background: scheme.foreground,
-    foreground: scheme.background
+    foreground: theme.foreground
   }
 }
 
-function makeInverse(theme: UmbraInput): UmbraInput {
-  const inversed = basicInverse(theme.scheme)
+export const inverse = (theme: UmbraInput, inversed?: UmbraInput) => {
+  if (inversed) return inversed
   return {
-    inversed: theme,
-    settings: theme.settings,
-    scheme: {
-      ...inversed,
-      ...inverseValidator(theme)
-    }
+    ...theme,
+    ...inverseValidator(theme)
   }
 }
 
-export const inverse = (theme: UmbraInput) => {
-  const hasInverse = theme.hasOwnProperty('inverse')
-  if (hasInverse) return theme.inversed as UmbraInput
-  return makeInverse(theme)
-}
-
-export const isDark = (theme: UmbraScheme) => {
+export const isDark = (theme: UmbraInput) => {
   return colord(theme.background).isDark()
 }
 
diff --git a/packages/core/engine/primitives/utils.ts b/packages/core/engine/primitives/utils.ts
index 6262572..04d015c 100644
--- a/packages/core/engine/primitives/utils.ts
+++ b/packages/core/engine/primitives/utils.ts
@@ -19,12 +19,10 @@ function randomHex() {
 
 export function randomScheme(randomSettings: RandomSettings = { amount: 1 }): UmbraInput {
   return {
-    settings: { ...defaultSettings, ...randomSettings },
-    scheme: {
-      background: randomHex(),
-      foreground: randomHex(),
-      accents: Array.from({ length: randomSettings.amount }, () => randomHex())
-    }
+    background: randomHex(),
+    foreground: randomHex(),
+    accents: Array.from({ length: randomSettings.amount }, () => randomHex()),
+    settings: { ...defaultSettings, ...randomSettings }
   }
 }
 
diff --git a/packages/core/engine/types/index.ts b/packages/core/engine/types/index.ts
index 892f466..9e50465 100644
--- a/packages/core/engine/types/index.ts
+++ b/packages/core/engine/types/index.ts
@@ -27,16 +27,11 @@ export interface Accent {
   readability?: number
 }
 
-export interface UmbraScheme {
+export interface UmbraInput {
   background: string
   foreground: string
   accents: (Accent | string)[]
-}
-
-export interface UmbraInput {
-  scheme: UmbraScheme
-  settings: UmbraSettings
-  inversed?: UmbraInput
+  settings?: UmbraSettings
 }
 
 export interface UmbraAdjusted {
diff --git a/packages/core/index.ts b/packages/core/index.ts
index 71a8268..7ca8e93 100644
--- a/packages/core/index.ts
+++ b/packages/core/index.ts
@@ -15,7 +15,6 @@ import { mostReadable, colorMix } from './engine/primitives/color'
 import type {
   UmbraOutput,
   UmbraSettings,
-  UmbraScheme,
   UmbraInput,
   UmbraRange,
   FormatedRange
@@ -45,7 +44,6 @@ export {
 export type {
   Umbra,
   UmbraInput,
-  UmbraScheme,
   UmbraSettings,
   UmbraOutput,
   UmbraOutputs,
diff --git a/packages/core/package.json b/packages/core/package.json
index ae0d91c..95d6c0f 100644
--- a/packages/core/package.json
+++ b/packages/core/package.json
@@ -1,6 +1,6 @@
 {
   "name": "@umbrajs/core",
-  "version": "0.0.4",
+  "version": "0.0.44",
   "description": "Umbra is a theme managment library that allows you to create semantic color themes that are easy to dynamically customize, change retroactively and scale progressively",
   "author": "Samuel M. Bednarz<https://github.com/CarelessCourage>",
   "repository": {
diff --git a/packages/playground/src/App.vue b/packages/playground/src/App.vue
index 0065130..9f1af8a 100644
--- a/packages/playground/src/App.vue
+++ b/packages/playground/src/App.vue
@@ -41,10 +41,6 @@ const brown = {
   color: '#87533e'
 }
 
-const something = {
-  shades: [5, 5, 5, 5, 15, 10, 10, 25, '#e5484d', 25, 25, 25]
-}
-
 const accent = {
   color: '#ff0157'
 }
@@ -53,22 +49,17 @@ const accent3 = {
   color: '#e5484d'
 }
 
-const theme = umbra({
+const theme2 = umbra({
   background: '#000000',
   foreground: '#ffffff',
-  accents: [
-    royal,
-    accent,
-    radixRed,
-    radixYellow,
-    radixBlue,
-    accent3,
-    radixRed,
-    success,
-    brown,
-    something
-  ]
-}).apply('body', {
+  accents: [royal, accent, radixRed, radixYellow, radixBlue, accent3, radixRed, success, brown]
+})
+
+const theme = umbra({
+  foreground: '#ffffff',
+  background: '#000000',
+  accents: ['#ff88ff']
+}).apply(undefined, {
   alias: true
 })
 
@@ -76,7 +67,7 @@ const t = ref(theme.input)
 const formated = ref(theme.formated)
 
 function inverse() {
-  const newTheme = umbra(t.value.scheme).inverse().apply('body')
+  const newTheme = umbra(t.value).inverse().apply('body')
   t.value = newTheme.input
 }