In this project all 127 possible velocity-values are being displayed on the Launchpad.
By this you can find out which velocity-value corresponds to which color on the Launchpad.
Here you can find the download for the Ableton Live set:
-Click on image for higher resolution-
Launchpad MK2 Velocities 1-64
Launchpad MK2 Velocities 65-127