Hi Fred,
I find that in many cases, Auto Fill is just right. Otherwise it is a good starting point for a small manual change, usually with extra fill but sometimes I reduce the fill to increase contrast.
Examples below, the file Names indicate what Fill was used, auto or manual + or -
Terry
PS. No, that us not my house
![Grin](https://ddisoftware.com/tech/Smileys/default/Grin1.gif)