So, say I paint a sun in yellow watercolor, dry the watercolor, then choose ‘paint inside’ (a slide button in the menu). Then with the watercolor brush (any brush really) I can pick another shade of yellow and incorporate to parts of the sun without going over any color lines and keeping the exact shape a water flow as before. Or I can choose green and turn the whole sun to green just by applying the brush roughly to the whole surface
Hi Makomeh. You can, also in Fresco, dry the layer and use Paint Inside. In Fresco it's called Lock Transparency and can be found in the Layer Actions menu; just tap the ellipsis icon (...) after you've drawn something on the layer and you'll see it. Let me know if I've misunderstood.