I did a test with sqrt blending (see: https://plus.google.com/+KasperKamperman/posts/jkACVWijSDN) and it’s indeed worth it. Blending from red to green is way nicer and brighter.
The code is linked below. I’ve used the build in Lib8tion functions sqrt16 and scale16by8: https://gist.github.com/kasperkamperman/b0d0d8058246d674dd01
@Mark_Kriegsman Is there already an implementation to make sqrt blended color palettes? You were talking about that in the last post. Is there a sqrt that you prefer that returns 16bit values? I came across different ones (http://stackoverflow.com/questions/1100090/looking-for-an-efficient-integer-square-root-algorithm-for-arm-thumb2).