Justice is not limited, it is a universal quality
It's not just that one. Pretty much every 2D art you did, including the recent ones, have that nice gradual gradient colouring. I am using GIMP normally, so if there's a way to do it, that would be quite helpful.That particular piece was done in Paint Tool SAI, as with anything else I've done in a similar art style. I just use the brushes in that program.
Thank you for reading.