Very nice. Animated but not distracting or detracting like a lot of others tend to be. Consistent color scheme allows tabs and icons to remain legible across the entire span of the window. Most of the yellow text/accents could probably stay white and be fine, but I'm nitpicking. I do appreciate that the tab text of the active tab turns yellow, however. I'm a tab hoarder, so being able to quickly identify which one I'm on is very helpful.