What is this coloration called ?

[toredano]

I have this one Guinea that is this color only.. all others are the same..
That guinea has dark,allmost black feathers. It is odd since he/she is the only one I have.
I tried looking it up but ..well my google fu is weak today

Its the one in the middle.. as you can see the featheres have a black outline.I think its called Royal Purple. but I dont know.. lol
They are helping me with pruning the flowerpots.. lol

Editing to add more pics..
these birds confuse me so much witgh all their colors..

I love their little bacon bits hanging out of their mouths

Jive McStrut`Stuff hanging with her buddys.She will not leave them..She is species confused.

 

[BetsyOK]

You are right, it's a royal purple!

 

[toredano]

Quote:
YAY.. thank you

see.. that confuses me tho.. no purple on her tho.. she looks brown or allmost back to me..

 

[BetsyOK]

These are obviously young birds. Some more color will develop as they mature. The purple shows up better in some lights.

 

[Akane]

The royal purple is just caused by not having all the genes for spotting that the pearls have so it makes sense that some individuals would look very similar. Especially while young. When you are trying to judge color look at the amount of spotting first. For each base color there is a version that is fully spotted, partially spotted, and not spotted which gives the variations that exist and then pied can be added on top of that. Most sites on color seperate them by spotting for that reason.