Is it possible that watercolors and other wet media interacting with the paper like in Rebelle, Fresco and Corel can be implemented?. Would it require a complete rewrite of the code?

I love Artrage but this feature would allow me to use Artrage only, rather than swapping in and out of other programs. I'm a traditional watercolor artist and paint interacting with the paper and the ability to do LIFTING IS very important. ANY thought?