Idea for a "Paint" concept

I've been thinking about this one for a long time. You should be able to paint items to change their color.

CRAFTING

To get paint, all you need to do is dye water in a caldron. The paintbrush is made the same as a torch but instead of coal its string.

HOW TO USE

Equipping the paintbrush, you can use it on the caldron to dye the brush with whatever color the paint is and tint up to 20 items. You can paint stone, fence, wood, and other similar building blocks. The paintbrush does not break, but it does have a similar bar to signify how much paint is left. To show what color the brush currently has, the sprite will change.