I believe they are all pullets. My SLW are pretty black but are slowly getting lighter, perhaps yours is just going to take a little longer to get more golden in that coloring.
Good luck, I am sure the girls are going to enjoy your party, make sure you get them a watermelon to peck at as their little fruity pinata!
Have fun. I do love the names.
Oh, I need to point out something that my 11-year old son blasted me on the other day when we were setting up his hobby fair board. He did his on guitars since he is playing electric guitar and he loves classic rock. His favorite guitarist is Jimi Hendrix. Now, imagine my embarrassment at having my 11-year old correcting his mother on that spelling (Jimi vs. Jimmi) when I grew up listening to classic rock.