I have never quite understood this! I will do washes of DS's school shirts which are white, but can I then put vests/knickers belonging to the girls in which are white, but with coloured flowers/lace on?? What about white pj bottoms with flowers on!? If you do just white things-do you then do your nearly white (ie white background with patterns on or pink/cream things) in with your coloured bits-ie jeans/dark t-shirts? DS's shirts now aren't particularly white and I don't know if that's because they are getting old/worn or if my washing style is crap!!
Please help!