@ThomasE
This c# disable group.gh (14.4 KB) (edited) is similar to previous, but with a cleaned up method to find the group, and then the same method used to apply the color to the group of the c# itself, one of its sources or one of its recipients:
@djordje the tips from Shapediver make sense, but imo are useful just for small definitions with “few” parameters.
In my situation i am forced to divide the work into steps because 1- computing time would be too much (stuttering silders, choppy feels, etc) and 2- the previews would be overlapping: many construction geometries are shown while editing them, but are not actual part of the final model… it would result in a “clusterf***” of colored stuff on display.
And, I’m sorry, but I cant disclose what the product is. It is already much that I showed part of the code on the video (but it would be impossible to copy any of it due to clusters and scripts…) 
@Gijs You have distinct steps!? Are those steps depending each-other? (meaning you need to complete one before the next make sense / is correct).
How do you solve the overlapping previews? How do you turn them on/off at the correct time?