digital dual white 60mm cabochon led pixel

We are selling digital RGB 60mm cabochon led pixels, which is a very popular product:
http://www.ipixelleds.com/index.php?id=95
now one of our customers wants the digital cabochon but in dual white.
it with UCS1904IC, Spiral cover(umbrella cover also available), 
18pcs SMD 5050 dual white LED chips, Warm white + Cold White, DC24V, 4.3W
welcome to share us your great idea!