(Feedback site) The "Vote" button on already voted comments being lighter

Right now, I sometimes want to vote on comments I've already voted on and forgotten that I have and so I unvote them accidentally.

It would be a nice little quality change to just have the already clicked "Vote"-buttons (The circular ones with the arrow in them) be of a lighter green colour.

The feedback site, in my opinion, is in a very good state overall and so it would fit to have such small details implemented too.