diff --git a/src/themes/darkThemeOptions.tsx b/src/themes/darkThemeOptions.tsx
index 8682db80b..12a85bcf0 100644
--- a/src/themes/darkThemeOptions.tsx
+++ b/src/themes/darkThemeOptions.tsx
@@ -8,12 +8,14 @@ import {
 declare module '@mui/material/styles' {
     interface Palette {
         accent: PaletteColor;
+        fill: PaletteColor;
         danger: PaletteColor;
         stroke: TypeText;
     }
     interface PaletteOptions {
         accent?: PaletteColorOptions;
         danger?: PaletteColorOptions;
+        fill?: PaletteColorOptions;
         stroke?: Partial<TypeText>;
     }
 
@@ -211,6 +213,11 @@ const darkThemeOptions = createTheme({
             dark: '#248546',
             light: '#2cd366',
         },
+        fill: {
+            main: 'rgba(256, 256, 256, 0.2)',
+            dark: 'rgba(256, 256, 256, 0.1)',
+            light: 'rgba(256, 256, 256)',
+        },
         text: {
             primary: '#fff',
             secondary: 'rgba(255, 255, 255, 0.7)',