Hi @Laurent Ducreux ,
Please visit the link below and install the chromium extension to your browser. I hope it will solve your problem:
Welcome to the Community!
At the moment, Butler doesn't have the ability to act on card covers or colours.
However, @Blair at Atlassian gave a fab answer to a similar question here: Is there a way to automate cover colors? and also gave ways that Trello users can request features, so I would recommend that you request the features that you'd like to see (I have!!)
Hope this helps!
Hi, Atlassian Community! My name is Brittany Joiner and I am a Trello enthusiast and Atlassian Community Leader. I'll be sharing with you a series of videos with my top tips on how to best use Tre...
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