I believe her color is what you'd call "incomplete buff columbian". You can get this color by crossing 2 different color birds, be it the same breed or not. Is she bantam sized? Her head looks like an old english game, so maybe a spangled dad & white mom. There's so many possibilities though
Yes, she is small in size, and her feet looks like the feet on my silkie but with only 4 toes, she seem to be very agressive around the silkies not sure why...she seems very alert unlike my other chickens. (pekin and silkies that i have also.)
I got her from a lady that sells chickens, but she still had no idea what she is crossed with.