I’ve made a Web Color Picker with WebControl SDK that could interest you if you ever searched for this type of component.
I’m using the new HTML5 color type witch doesn’t work on all browsers for now.
Chrome is OK and support for all browsers will come in the future, as related from W3C.
It should very simple to use and understand, but if you have any questions, let me know…
And of course, please share any updates.