GColor3
IVAKAMACALA:
Ever wanted to know the value of that color on your screen? Gcolor3 enables you to pick the color from any pixel on your screen. It also offers a palette, so that you can easily mix and match a couple of colors together.
When you have found the perfect combination of colors, naturally you want to save them. Gcolor3 allows you to conveniently save and retrieve colors.
Gcolor3 is a color selection dialog written in GTK+ 3. It is much alike Gcolor2, but uses the newer GTK+ version and other modernisations to better integrate into your modern desktop.