Label background colors
Tasks can appear in multiple colors, so it means that label colors blend in rather than standing out. I like the way you have a number in white on a red background after the word 'today'. It would be great to have the ability to do this with labels too.
I'm *not* suggesting that all labels should have a background as the task list would become too visually fussy, and not all labels need to stand out. Instead I'd like this as an option.
My ideal would be, say 8 label colors as text colors with no background, plus 8 background colors (the same 8) with white/black text on them.