Share 'Colored Cocoa Butters from ChefRubber'

I'm looking to start using colored cocoa butters from Chef Rubber.  It seems they offer many lines of colors including Artisan, Decor Jewel, Natural and Pearl.   Does anyone have any experience using these?  In your opinions which line of colors would be the best for bon bons.   I especially like the colors used at Williamdeanchocolates.com