mesh color bug

I was playing around with meshes and I ran into this bug. Example: myMesh:color(i,r,g,b,a) where i is the index and r,g,b,a is the color. If you tap the (i,r,g,b,a) to bring up the color wheel and change the color, the index i gets wiped out and just the color (r,g,b,a) is left. I tried searching if this was mentioned already, but didn’t find anything.