Is the HA preview supposed to be painted like it is, or it was a mistake?

[IMG]http://i.imgur.com/4CrJFWf.png[/IMG] The colors don't match their places.

Considering it's been like this for years, I'm thinking it's not really a bug. Either way, it would require the item to be revamped - so your post would be best in the What do you think needs to be revamped? thread. :)