I've been struggling for over an hour, reading documentation etc. but I just can't seem to figure this out. My use cases is that I've got 4 different “Text Annotation” colours, I want to add shape icons to it to make clear what sort of “annotation” it is (blue = info, purple = question, etc.).
The colour used is #cfe4ff with 0% transparency (ergo 100% in the slider):

This is what I have now as a formula. I tried both with the prefix = and without it. I've also tried case sensitivity.
=BACKGROUNDCOLOR(THIS)="#cfe4ffff"
Set up like this:

I must be doing something really stupid but I'm hoping someone can nudge me in the right direction ChatGPT was not helpful and hallucinating all the time