Howdy,
Last night I took out my old copy of Lilo Stitch for inspiration. The overall design and use of color in that film is just great in my opinion. Then I remembered that in that film ALL the backgrounds were hand painted in watercolor.(they went old school).
And it really had a pleasing effect. So I wondered if anyone had done that in realtime. So I “googled”: water color shader, and found these two .pdf’s
and
Does anyone know of any Unity shaders that can simulate watercolor?