Rainbow clues are difficult to distinguish from rainbow-or-color clues

[not-an-aardvark]

In the screenshot below from the "Rainbow" game variant, the bottom player's A card has gotten a white clue (indicating that it's either white or rainbow), and the bottom player's C card has gotten two different color clues (indicating that it's definitively rainbow).

The visual indicators for these clues are pretty difficult to distinguish at a glance, especially when they're not side-by-side.

Instead of showing a rainbow circle with a solid-colored border, would it be reasonable to split the circle in two, showing rainbow on one side and a solid color on the other? That seems like it would distinguish it more clearly from a rainbow-only circle. Example image from manually editing CSS in devtools: