Changed colors and added color sheme

src/util/style.ts

@@ -1,9 +1,17 @@
 import { StyleSheet } from 'react-native';
 
+const colorScheme = {
+  background: "#273043",
+  postBox: "#9197AE",
+  postFont: "#EFF6EE",
+  accept: "#4D8B31",
+  error: "#F02D3A"
+}
+
 export const style = StyleSheet.create({
   app: { // Outermost container
     flex: 1,
-    backgroundColor: '#fff', // For the "entire" app
+    backgroundColor: colorScheme.background, // For the "entire" app
     alignItems: 'center',
     justifyContent: 'center',
   },
@@ -13,14 +21,14 @@ export const style = StyleSheet.create({
     flex: 1,
     alignItems: 'center',
     justifyContent: 'flex-start',
-    backgroundColor: '#fff', // For the container holding the posts
+    backgroundColor: colorScheme.background, // For the container holding the posts
   },
   postView: {
     flexDirection: "row",
-    backgroundColor: '#fff',
+    backgroundColor: colorScheme.postBox,
     paddingVertical: 5,
   },
   postFont: {
-    color: "#000",
+    color: colorScheme.postFont,
   },
 });