Revv

I was wondering why my Quartz bar was turning white at certain times. It seems that's the colour it changes to when something enters your dead zone, or exceeds your maximum range.

The GCD "spark" is (well, for me), a very thin bar at the top of my cast bar, that is dark in colour, with the usual "spark" (what shows the current casting time of the current spell). I don't recall if it goes from left to right, or right to left, but I am sure you get the picture. Very useful to know, so you aren't spamming keys needlessly.