Add success to the palette that's being passed to create theme. Mui was using default colors without this inclusion, causing the success colors in it's snackbar to be the wrong colors.

src/ui/React/Theme.tsx

@@ -93,6 +93,11 @@ export function refreshTheme(): void {
         main: Settings.theme.warning,
         dark: Settings.theme.warningdark,
       },
+      success: {
+        light: Settings.theme.successlight,
+        main: Settings.theme.success,
+        dark: Settings.theme.successdark,
+      },
       background: {
         default: Settings.theme.backgroundprimary,
         paper: Settings.theme.well,