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The weirdest shit. You have to ask OpenGL to normalize byte colors. So the correct call to glVertexAttribPointer would be:

glVertexAttribPointer( attribNo, 4, GL_UNSIGNED_BYTE, GL_TRUE, 0, squareColors);

I spent like 20 minutes looking for what the problem could be with my code when I tried to switch float colors to byte colors, all my colors were white. And it was just this `normalized` flag.

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