Are white bubble corals bleached?

[vijaym85]

My green bubble has lost much of its dark green and is now close to a white color, it looks nice but not as nice as the green, at any rate is a white bubble coral just being sold as a bleached colored one? Like a brown Acro for comparison.

 

[Hormigaquatica]

No... white/tan is a more common, naturally occuring color variant of bubble. If I remember right, they usually come from areas with less intense lighting than the greens do on a reef.