I have now found a post from @peternlewis from October 2023:
"There is no way to affect the appearance of the palette."
Sorry to have returned to something that had previously been covered. I did search but perhaps "macro" being spelled as "makro" in the title hid the thread from me... Well, it made a change from "marco"! I've corrected the title in order to, I hope, make that thread more findable for others.