fix redux action for add/remove of favorite hours

Co-authored-by: Hawken Rives <[email protected]>

Author: drewvolz

modules/navigation-buttons/styles.ts

@@ -1,4 +1,5 @@
 import {StyleSheet, Platform} from 'react-native'
+import {link} from '@frogpond/colors'
 
 export const commonStyles = StyleSheet.create({
 	button: {
@@ -40,6 +41,7 @@ export const rightButtonStyles = StyleSheet.create({
 		}),
 	},
 	icon: {
+		color: link,
 		...Platform.select({
 			ios: {
 				fontSize: 24,

source/redux/parts/buildings.ts

@@ -17,7 +17,12 @@ const slice = createSlice({
 	reducers: {
 		toggleFavoriteBuilding(state, action: PayloadAction<string>) {
 			let favoritesSet = new Set(state.favorites)
-			favoritesSet.delete(action.payload)
+
+			if (favoritesSet.has(action.payload)) {
+				favoritesSet.delete(action.payload)
+			} else {
+				favoritesSet.add(action.payload)
+			}
 
 			let newFavorites = Array.from(favoritesSet)