Hi,
On the latest version of OS X (10.10, I haven't tried on other OSes), the "Send to track X Y" label gets fuzzy when moving the gain fader or hovering a button on the small "Controls for track" window.
Also, the "blue glow" displayed when a textbox has focus doesn't go away when the focus is lost:
By the way, is it possible to keep the i/o windows opened when another window is focused ? EDIT: I found it. There is a checkbox for this in the "Advanced UI/system tweaks" preferences window. Awesome!