New "inverted" Background Colors (#6354)

- Added 2 new Inverted background colors as requested under issue#4726

Co-authored-by: Marie Stoppa <marie.stoppa@essec.edu>

packages/twenty-ui/src/theme/constants/BackgroundDark.ts

@@ -11,6 +11,8 @@ export const BACKGROUND_DARK = {
   secondary: GRAY_SCALE.gray80,
   tertiary: GRAY_SCALE.gray75,
   quaternary: GRAY_SCALE.gray70,
+  invertedPrimary: GRAY_SCALE.gray20,
+  invertedSecondary: GRAY_SCALE.gray35,
   danger: COLOR.red80,
   transparent: {
     primary: RGBA(GRAY_SCALE.gray85, 0.5),

packages/twenty-ui/src/theme/constants/BackgroundLight.ts

@@ -11,6 +11,8 @@ export const BACKGROUND_LIGHT = {
   secondary: GRAY_SCALE.gray10,
   tertiary: GRAY_SCALE.gray15,
   quaternary: GRAY_SCALE.gray20,
+  invertedPrimary: GRAY_SCALE.gray60,
+  invertedSecondary: GRAY_SCALE.gray50,
   danger: COLOR.red10,
   transparent: {
     primary: RGBA(GRAY_SCALE.gray0, 0.5),