Colors are random

- [x] I am on the [latest](https://github.com/ActivityWatch/activitywatch/releases/latest) ActivityWatch version.
- [x] I have searched the issues of this repo and believe that this is not a duplicate.

- **Android 12**:
- **v0.10.0**:

## Describe the bug

I will explain with an example:
In Top applications Firefox is in yellow
But it category (Browsers) is in red

Same for Facebook is in red
But it category (Social Media) is in green

Same for all the apps

What I can do about that??
For me, I think the elements must be the same color of their category

## To Reproduce

## Expected behavior

## Documentation

## Additional context