Is this grey egg the result of a heavy bloom?

[SouthernParadise]

A little help would be much appreciated. This year I bred F2 generation olive egger hens to a cream legbar rooster. Out of 25 hens I hatched out, 15 are avocado green egg layers. And I have several that are laying what appear to be dark grey to almost grey purple color. Is this the result of an olive egger with a heavy bloom deposit, or will the eggs always be this color? Thanks. I’ll try to get better pics in the sun tomorrow

 

[nuthatched]

Get it wet, of it gets substantial darker, it's bloom, if not, that's the color of the egg.