I am glad you like the new ColorEditor control. It means a lot. In our immediate plans is to provide out-of-the-box integration between RadColorEditor and RadColorPicker.
I really like the idea of the gradient picker. I'll add it as a feature request to our PITS under the name "ColorEditor: Gradient color picker". We won't be able to work on it for the Q1 2012 release since all our resources have been allocated. Let's see if the feature gathers some votes and will let you know once we schedule it.
All the best,
the Telerik team
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