This pack provide several improvement to the original "Flood fill to" nodes.
Expand shapes toggle
Auto Levels toggle
Multiply by Bounding Box option get a Min(X, Y) and a Average (X, Y) mode. Average mode output a better representation of shapes size, especially for shapes with a important length/width difference. Min mode is here in case of you need it
Controllable expand distance for the Flood Fill to Gradient node
Using Substance Designer 2021.1.2 (11.1.2) or above
Base Cells are done with my FREE "Non Uniform Edge Detect"