chore: use dominant/average color instead of just black

[marandaneto]

💡 Motivation and Context

just a POC since it does not work well all the cases
eg if the doninant color is white and the background is white, its masked but you actually dont know there was something there eventhough the text color was red

💚 How did you test it?

📝 Checklist

• I reviewed the submitted code.
• I added tests to verify the changes.
• I updated the docs if needed.
• No breaking change or entry added to the changelog.
• If there are related changes in the core package, I've already released them, or I'll release them before this one.

[github-actions]

	Fails
🚫	Please consider adding a changelog entry for the next release.

Instructions and example for changelog

Please add an entry to the appropriate changelog:

• posthog/CHANGELOG.md (core module)
• posthog-android/CHANGELOG.md (android module)
• posthog-server/CHANGELOG.md (server module)
• posthog-android-gradle-plugin/CHANGELOG.md (android plugin module)

Make sure the entry includes this PR's number.
Example:

## Next
- use dominant/average color instead of just black ([#401](https://github.com/PostHog/posthog-android/pull/401))

If none of the above apply, you can opt out of this check by adding #skip-changelog to the PR description.

Generated by 🚫 dangerJS against 8799d3b

[marandaneto]

android logo is green ish