Can SPS have dual polyp color?

[michika]

Can SPS (acropora) have more then one polyp color?

This is a photo of one of my colonies, and it has brown and light blue polyps distributed all over. There is no patern to the placement of the colors, for example all the blue polyps aren't exclusively found at the tips.

[IMG][/IMG]

I haven't been able to find anything about this in any of my books. Has anyone else seen this, or know if its "normal"? The coral seems fine, good polyp extension, good coloration, etc.