fix(#313): incorrect color types (#314)

Author: mateusz1913

typings/Picker.d.ts

@@ -5,6 +5,7 @@ import type {
   ViewProps,
   NativeSyntheticEvent,
   TargetedEvent,
+  ColorValue,
 } from 'react-native';
 import { processColor } from 'react-native';
 
@@ -76,18 +77,18 @@ export interface PickerProps<T = ItemValue> extends ViewProps {
   /**
    * Used to locate this view in end-to-end tests.
    */
-   testID?: string;
-   /**
-    * Color of arrow for spinner dropdown in hexadecimal format
-    * @platform android
-    */
-   dropdownIconColor?: ReturnType<typeof processColor>;
-   /**
-    * Ripple color of spinner's arrow
-    * @platform android
-    */
-   dropdownIconRippleColor?: ReturnType<typeof processColor>;
-   /**
+  testID?: string;
+  /**
+   * Color of arrow for spinner dropdown in hexadecimal format
+   * @platform android
+   */
+  dropdownIconColor?: number | ColorValue;
+  /**
+   * Ripple color of spinner's arrow
+   * @platform android
+   */
+  dropdownIconRippleColor?: number | ColorValue;
+  /**
    * On Android, used to truncate the text with an ellipsis after computing the text layout, including line wrapping,
    * such that the total number of lines does not exceed this number. Default is '1'
    * @platform android