I don’t remember the context but in the chat I said “I could probably draw a drowning SqueakyFriend”. And then uh, I did, and then decided to add some sea fluffies to it. Y’know, to keep it fluffy related.
The program I use has a “watercolor” brush that adds color gradually! So I use that to add a “base” color (in this case blue), then just paint lighter or darker shades and hues where needed. If I then use the watercolor brush to lightly paint a different color (white, yellow, etc), it mixes that color with the blue and provides an organic underwater look. So surprisingly, all the coloring was done on one layer!