Overlay blend mode #4700
Description
No time to put together a PR just now (I need to check out of this hotel!) but while skimming colors.py I just noticed:
blend_mode : {'hsv', 'overlay', 'soft'} or callable, optional
The type of blending used to combine the colormapped data values
with the illumination intensity. For backwards compatibility, this
defaults to "hsv". Note that for most topographic surfaces,
"overlay" or "soft" appear more visually realistic. If a
Sounds like a good candidate for a 2.0 change to me. AFAIK the HSV space is never the best option for pretty much anything :-).