Face color properties issue

Version 8 SR5
(8.5.24046.3001, 2024-02-15)

Trying to use this brilliant little rui:

and not working.
Then did some trouble shooting, looked at the macro they are using, and I’m unable to manually color individual subd faces through the command line back end of properties O C O. I can only color faces through the properties GUI. Is this a bug or a feature?

Subds are one of the most amazing things about Rhino but we need better selection and control tools. Being able to organize and select by color is a huge must for fluid modeling sessions and not just exercises in tedium on complex models.

to summarize: we’re unable to color subd faces via command line.

testsetperfacecolor for the goooooaaaallll!!!