Thank you! Glad you enjoyed it!
Never heard of a right click + left click shortcut before, but as someone previously mentioned they had trouble firing with their mouse track-pad because of that combo so that's probably worth adding a setting for at some point.
I'd also completely failed to consider how colours would work for colourblind players, which is totally my bad! I'll probably add some recolours or tweak the sprites at some point to try fix that up. Thank you for your feedback! Really appreciate it :3