I see a whole bunch of iOS open source common controls to pick a color, but I've not found anything that I can use for Monotouch in C#. I've looked in Monotouch.Dialog but can't see it.
Here's some iOS one's I've found:
http://maniacdev.com/2011/11/open-source-ios-color-picker-components-roundup/
Has anyone got anything like this, or could provide some advice?
I know it is some time from when you posted your request, but I also needed a color picker for monotouch, so I developed one and I would like to share the code with anyone interested.
You can find it on github: http://yiannisbourkelis.github.com/AdvancedColorPicker/
It is a very simple and easy to use component and you can use it in any free or commercial application.