I’ve been using Fast as my default colormap in 5.12.0-RC#. One thing I have noticed is that the NaN color is set to black. I don’t think that is a good color for NaN as it does not make it distinct nor noticeable enough.
I’m not sure if this is intentional or the color was just left out. Cool to Warm sets the NaN color to yellow. Maybe this is not the best choice for Fast because it has some yellow in the middle. Maybe we could use a different color that is bright but distinct from the hues being used, such as magenta.