Clip Colors in session view. Not clear how to do it.

I read the thread https://community.remotify.io/questions/question/how-to-display-ableton-track-colors-on-midi-controller-pads/page/1/?order_by=oldest

I downloaded the json exemple. i can not do my touchosc reflect the colors of clips in session view. The code in touchosc is fine: depending on velocity received, it translates to a color resembling the ableton clip colors. It’s fine.

but I don’t know how to setup CSS to work properly. Should I loop over tracks, then over clips? Should I use custom code to adress the buttons on my script (buttons 139 to 170 on a grid 8×4). I’m trying everyghing I found on this forum, sometimes I can see colors on touchOSC, but when navigate session the color stick to where it were, and the new position paint the button aside, soon every button is painted, but not reflecting the clip position on ableton.

I’m very frustraded at this point. ChatGPT is a help, but cannot make things work properly.

Can someone help?