Ah that would be perfect, but for some reason the Genesis Prefs won't fire up.
You can also access the Genesis Prefs from Genesis in the Menu "Settings->Genesis". Perhaps you are missing a font, Reaction/ClassAct Gadgets or you are low on memory? I have a smaller Genesis Prefs that will save about 20k of memory if you are low.
The Genesis icons are non-standard. If you save the settings, the icon may turn into a small white dot. This can be avoided by loading the icons into SYS:Tools/IconEdit to convert them and then save them. The latest AmigaOS 3.9 Unofficial Boing Bag also has a fix for this.
I'll try running it from WB3.1 disks, see if that works.
It probably won't. The Reaction and ClassAct gadgets are not completely compatible and AmigaOS 3.9 has some new ones. An installation problem may be part of your problems running Genesis Prefs under AmigaOS 3.9.