Really yes you'd just call them mutt colors. lol thats what I call them when they 'don't meet a standard' - but #1 has partridge markings on a gold base. She may be the orp's offspring with that gold base. ( I use the term gold in the genetic sense, it can be a color any yellow/gold shade - all chickens colors come from gold or silver (even whites are gold or silver gened)
Anyway #1 you can see she came from partridge, shes what you would call a buff with partridge markings.
#2 is a columbian type pattern. Black hackles, black tail... not the proper proportion of colors but still you'd call him columbian patterned.
#3 is a black hen with silver leakage - that leakage is showing the partridge in her, in that penciling/lacing on the chest. I have a Silkie X D'uccle cross who is black and reddish gold, her gold does very similar - especially in her neck, Corvette (my girl) doesn't have much color on her chest since she molted.
BTW I love them! - I really like silkie crosses...
I have 2 silkie crosses now, I did have quite a few but I only kept my 2 favorites and prettiest
Besides most of the others were boys...However I do have 2 youngsters in my brooder we will see how they turn out. But Corvette I told you about, Chipmunk takes after the OEGB cross hen thats her mom, wild type/ partridge pattern throughout her body, black hackles and crest. Very pretty bird.