Wasn't sure if this was to go in bugs or suggestions, but I've noticed it.

On the achievement page, the colors for the tab (Overview, breeding, ect), that you're on are beige. IT doesn't make sense to me, as the colors for the Den, Explore and Hoard turn darker blue when moused over (as I would expect these tabs would).

I'm assuming this was just a little thing that was missed during the creation of the Night layout.