It seems like the new label feature is a perfect alternative way to set default colors for Tile cards.
For example, I want all of the tiles for my spa/pool entities to be the same color blue as I have for my Pool label. The same for my AV label. If multiple labels are present then allow any the be selected.
This feature would go hand in hand with the default inheritance of entity icons.
…or, I guess Tile cards could simply be label-able and use the the label color that way.