diff --git a/MassiveFab.tsx b/MassiveFab.tsx
index 7f45f1d..ec3a5d6 100644
--- a/MassiveFab.tsx
+++ b/MassiveFab.tsx
@@ -1,5 +1,6 @@
 import {ComponentProps} from 'react'
 import {FAB, useTheme} from 'react-native-paper'
+import {CombinedDarkTheme, CombinedDefaultTheme} from './App'
 import {lightColors} from './colors'
 
 export default function MassiveFab(props: Partial<ComponentProps<typeof FAB>>) {
@@ -8,8 +9,8 @@ export default function MassiveFab(props: Partial<ComponentProps<typeof FAB>>) {
   const fabColor = lightColors
     .map(lightColor => lightColor.hex)
     .includes(colors.primary)
-    ? 'black'
-    : undefined
+    ? CombinedDarkTheme.colors.background
+    : CombinedDefaultTheme.colors.background
 
   return (
     <FAB