Since there doesn't appear to be any specific spot for suggestions, I'm posting here.

For those single level perks, please color the perk name a different color so you know you've already chosen it. Sometimes it's hard to keep track of what you've already chosen and it's not clear if the reason you can't pick one is because it's bugged or if because you've already chosen it.

The star lights up when you pick a perk already.

If its available, it shines a bit brighter than the rest. If you pick it, it's much brighter and the trail connecting it to the previous is lit.

Non available perks are unlit.

Available perks are blue.

Taken perks are red.

How can you not notice this?