Canvas

Using this block you could customize paintings in minecraft. There would be 3 places to put dyes to mix colors. A slider for how big the brush size would be. A setting on what size the painting would be. A screen on the actual painting so you can paint. To add a painting, shift-right click on the canvas. This should exist because some people want to make there own painting. You can still keep the default paintings. Craft by 6 planks and one stick.