The following are some suggestions for color schemes. You simply copy these into your ~/.Xdefaults file and then run

$ xrdb ~/.Xdefaults

For more information see the X Resources page.

Grey

Gdraw.Background: #b0b0b0
Gdraw.GGadget.Box.BorderBrightest: #f7f7f7
Gdraw.GGadget.Box.BorderBrighter: #dddddd
Gdraw.GGadget.Box.DisabledBackground: #d0d0d0
Gdraw.GGadget.Box.PressedBackground: #909090
fontforge.CharView.SelectedPointColor: #f0f000

Yellow

Gdraw.Background: #f0f0b0
Gdraw.GGadget.Box.BorderBrightest: #fffff7
Gdraw.GGadget.Box.BorderBrighter: #ffffdd
Gdraw.GGadget.Box.DisabledBackground: #ffffd0
Gdraw.GGadget.Box.PressedBackground: #cccc66
fontforge.CharView.SelectedPointColor: #c8c800

Blue

Gdraw.Background: #b0b0f0
Gdraw.GGadget.Box.BorderBrightest: #f7f7ff
Gdraw.GGadget.Box.BorderBrighter: #ddddff
Gdraw.GGadget.Box.DisabledBackground: #d0d0ff
Gdraw.GGadget.Box.PressedBackground: #9090f0
fontforge.CharView.RasterGridColor: #0000ff
fontforge.CharView.SelectedPointColor: #f0f000

Green

Gdraw.Background: #a0e8a0
Gdraw.GGadget.Box.BorderBrightest: #f7fff7
Gdraw.GGadget.Box.BorderBrighter: #ddffdd
Gdraw.GGadget.Box.DisabledBackground: #d0ffd0
Gdraw.GGadget.Box.PressedBackground: #90f090
fontforge.CharView.SelectedPointColor: #f0f000

White

Gdraw.Background: #ffffff
Gdraw.GGadget.Box.BorderBrightest: #eeeeee
Gdraw.GGadget.Box.BorderBrighter: #dddddd
Gdraw.GGadget.Box.DisabledBackground: #d8d8d8
Gdraw.GGadget.Box.PressedBackground: #a0a0a0
fontforge.CharView.SelectedPointColor: #c8c800

Black

Gdraw.Foreground: #ffffff
Gdraw.Background: #000000
Gdraw.GGadget.Box.BorderBrightest: #404040
Gdraw.GGadget.Box.BorderBrighter: #606060
Gdraw.GGadget.Box.BorderDarker: #808080
Gdraw.GGadget.Box.BorderDarkest: #a0a0a0
Gdraw.GGadget.Box.DisabledForeground: #e0e0e0
Gdraw.GGadget.Box.DisabledBackground: #808080
Gdraw.GGadget.Box.PressedBackground: #707070
fontforge.CharView.WidthColor: #ffffff
fontforge.CharView.TransformOriginColor: #ffffff
fontforge.CharView.ForegroundOutlineColor: #ffffff