-Wait for blocks to generate (Turbo Mode to make it faster, if you want) -CLICK to prepare paint brush. -Press and hold SPACE to change color of paint. -CLICK (and hold) to paint the blocks.
This is a direct rip-off, except it buffers the clones at the start, so you don't need to wait... Anyways the original is actually really cool, I might make an actual remix of it some day. (I haven't done any tiling stuff since 2.0 came out ^.^) Good job, OP, keep up the awesome work!