This app for Trello allows you to use selected label colors to fill the entire card. Just take a photo of the card and choose any colors from your device's color profile (or from a library that is available).

As a simple extension, the app is compatible with cards that are already in your account.

You can choose the type of coloring either by taking the average of the selected labels or just picking the first label.

The app does not use as much CPU and memory as before.

It also now allows you to change classes of the labels when there are changes.