Changed default colours

Author: NatLeung96

src/colourscheme.ts

@@ -3,7 +3,7 @@ import { createTheme } from "@mui/material/styles";
 export const defaultColours = createTheme({
   palette: {
     primary: {
-      main: "#000080",
+      main: "#C0C0C0",
       // light: currently calculated automatically by MUI
       // dark: currently calculated automatically by MUI
       contrastText: "#FFFFFF"