but they fade under heavy use
yes they do , after half a lap of the nurburgring
was the Mrs' face

, that's when you find out that adrenalin is brown...
You need to take your brave pills with standard brakes in my experience when pressing on, I remember managing to get my old 8v's to glow like the cars you see in Le Mans races after an exhuberant outing along the back roads. Impressive yet terrifying all at once