Activity colouring depending on HEC usage

Intel VTune have similar profiling information which is helping to find places where not all available cores (HECs) are used.
The idea is to use tri-color/semaphore (red, yellow, green) to paint the activity diagram depending on HEC usage. For example, if activity is less than 50% it's red, less than 75% yellow and more - green. So programs are pushed toward more parallel computations.

Actual HEC activity could be painted, too.