Really great program, but I have a ton of trouble with the "Feature Type" key and coloring. I'm partly color blind, red green, and the size of the boxes and colors used make it extremely difficult for me to use color to differentiate between features like "Internal Single Extrusion" and "Solid Layer". I'm surprised no accessibility features have been added, as otherwise it's a really impressive program.
-An alternate set of colors for people with colorblindness
-The ability to customize colors
-The ability to disable the display of certain features in "Preview Mode", the way one would remove layers in Photoshop.
If such a feature exists and I'm just missing it, let me know. Cheers!