Hiya
some also have the French word "Javel" on them which also means bleach. DM at Stacchus S-Bahn/Münchner Freiheit have Domestos and gtho is right, this one is the one you'll want:

For a more ecological alternative you could try

Adding Natron (you'll find it in the baking section of the supermarket) can help with greying washing, alternatively use Ace soft bleach.
For colours that have run, Hoffmann make a specialist product though you might have fixed the stain through washing.
Katrina