I can’t seem to make this work. I check the Appearance/Color box, click/double-click/try-abracadabra on the rectangle but no color options are offered. On my Macbook, it offers up a color wheel.
Hmm. Yes, I can confirm this doesn’t work so well… For me, it works if I click somewhere else (for instance on the background of the patch) and then come back to the box.
I will look into it.
Thanks for the report.