Blender Git Loki

Color Management: Updated False Color Look

Change to false color are based on artist feedback:

* Even 2.5 EV differences down to -10 EV.
* Even 2.167 EV differences up to +6.5 EV.
* Slightly below middle grey biased toward cyan.
* Slightly above middle grey biased toward yellow.
* Converts to nonlinear luma for more accuracy.