What makes platinum clownfish more desirable?

[bgruchow]

I know that what looks cool to you is the fish you should buy. But there are grades for picassos based on several things.
Is there a grading system for Platinums. Is it the more white, black fins or orange fins.

 

[FisheriesOmen]

Normally if it isn't all white it is a cull (except for the out edges). Normally outer edges are orange, so I'm going to take a guess that no, there are no grades. Unless you count the culls of the batch.