Cool, feels at least a tiny better. Though a greyed out arrow or something might make sense. I like reddit's up/down arrows, i've you've seen those. has a selected state. makes it pretty clear.
Agreed, looks much better with a greyed out arrow. Making arrows disappear didn't work out visually on permalink pages.
So we now have all arrows in red (both for news and comments) and after upvoting or downvoting, only the corresponding arrow remains displayed in gray.
That should do it I think?