C.M.
There is a stain remover that works very well. It's called Carbona. I had to order it online since the area stores don't sell it anymore. I've had it remove grease from clothes, the stair carpet gets so dirty. It does clean it well. I've never had it remove color from clothes. They sell a general cleaner and smaller bottles that are numbered from 1-9 and they are for special stains. They website explains it all.
Good Luck
C.