Sorting the laundry

I had great fun helping Mummy sort the laundry today. She asked me to put the white things in one pile and the coloured things in another. I got a bit confused though ... what pile is it for white things that also have colour!?

"We should all do what, in the long run, gives us joy, even if it is only picking grapes or sorting the laundry."
(E. B. White)