A ripof^w tribute to the Color Lines, possibly the first PC game I've played.
If the game seems too hard, try lowering `colors`,`add_balls`, or `min_chain` at lines 12-14.
Help flags are `show_next_cells` and `show_next_cols` at lines 26-27, for those who want to disable them by default.
The rest of the code is in a rather pitiful state.
Good textures and design.