Switch component. thumbColor and trackColor do not work.

🐛 Bug Report

Switch component. New options thumbColor and trackColor do not work.

To Reproduce

According to documentation I use trackColor and thumbColor

            <Switch
              value={true}
              trackColor={'green'}
              thumbColor={'gray'}
            />

This removes warnings but does nothing with colors.

Okay, when I put deprecated option onTintColor and thumbTintColor back:

            <Switch
              value={true}
              onTintColor={'green'}
              thumbTintColor={'gray'}
            />

there are warnings, but colors are changed.

Expected Behavior

I expect code works well according to the docs: https://facebook.github.io/react-native/docs/switch#thumbcolor

Code Example

            <Switch
              value={true}
              trackColor={'green'}
              thumbColor={'gray'}
            />

Environment

React Native Environment Info: System: OS: macOS 10.14.3 CPU: (8) x64 Intel® Core™ i7-3615QM CPU @ 2.30GHz Memory: 2.66 GB / 12.00 GB Shell: 3.2.57 - /bin/bash Binaries: Node: 11.2.0 - /usr/local/bin/node Yarn: 1.12.3 - /usr/local/bin/yarn npm: 6.4.1 - /usr/local/bin/npm Watchman: 4.9.0 - /usr/local/bin/watchman SDKs: iOS SDK: Platforms: iOS 11.4, macOS 10.13, tvOS 11.4, watchOS 4.3 Android SDK: API Levels: 23, 25, 26, 27, 28 Build Tools: 23.0.1, 23.0.2, 25.0.2, 25.0.3, 26.0.2, 26.0.3, 27.0.0, 27.0.1, 27.0.3, 28.0.0, 28.0.2, 28.0.3 System Images: android-28 | Google APIs Intel x86 Atom IDEs: Android Studio: 3.2 AI-181.5540.7.32.5056338 Xcode: 9.4.1/9F2000 - /usr/bin/xcodebuild npmPackages: react: 16.6.3 => 16.6.3 react-native: 0.57.8 => 0.57.8 npmGlobalPackages: react-native-cli: 2.0.1

[JKCooper2]

Track color takes an object, not a single color: https://facebook.github.io/react-native/docs/switch#trackcolor Snack: https://snack.expo.io/@jkcooper/rn-issue-#23570---switch-track-color

[VadimCpp]

Track color takes an object, not a single color: https://facebook.github.io/react-native/docs/switch#trackcolor Snack: https://snack.expo.io/@jkcooper/rn-issue-#23570---switch-track-color

Thank you. It works!