I have noticed that the popup notification, "daily vote limit reached" has different colors depending (I assume) on how close the user is to being able to vote again. For instance, a user got this popup when he could vote again in a couple of minutes:
And this one when he was 9 hours from being able to vote again:
Is this by design? And if yes, do the different colours depend on time left to be able to vote again, or on some other variable? Are they randomly chosen?
I couldn't find anything on meta explaining this inconsistency (and by "inconsistency" I mean: sometimes the popup is blue, sometimes it is red, and I'd just like to understand why it changes).