Up/downvote arrows not greying out after vote

[szopin]

Not sure if the buttons used to grey out before, but just noticed that one cannot tell if they already upvoted a comment when it is in [score hidden] state, extra upvote nullifies the previous one, so not sure if the correct way to address this is greying out last used option, or just adding red/blue highlight to the [score hidden] comments

[accumulator]

Thanks, fixed.