Expand
This effect is used to expand a span of colors, but it will respect the notions of color gradient and smooth on your image.
The options Radius and Render mode are identical to the options met with the Line colorize effect.
Two squares with a color gradient and a small smooth on the borders
The Expand effect applied with a radius of 10, in Euclidian mode
warning
The Expand effect is only available to TVPaint Professional users.