I got the idea, You are the best 🙌
I used the inline function for Cmbs to change the bgColour :folded_hands:
inline function onAllCallbacksControl(component, value)
{
local myColours = [0XFFffffff, 0XFFFF0000, 0XFF0000FF, 0XFF000000, 0XFFbdd8e1, 0XFFe6004a];
local idx = AllCmbs.indexOf(component);
AllLfos[idx].setBypassed(value == 1);
AllLfos[idx].setAttribute(AllLfos[idx].WaveFormType,value-1);
panels[idx].set("bgColour", myColours[value]);
panels[idx].changed();
}