Not #gamedev but I used something I learnt in gamedev to do blazing fast color based research, a look up texture. Basically a raw 3Dtexture where every pixels is an uint16 that store an index to the thread db. For any color , get the closest thread reference. Pretty fun side project to generate a cross-stitching pattern for a christmas gift. Not into cross-stitching at all but it's so close to #pixelart I have tons of ideas x)