Use "Colour" Formula
European commercial and American detergents all the time on my whites and lights. No huge difference, unless one is expecting "whiter than white" whites from a heavy dose of OBAs.
Personally am not a huge fan of chemical whitening and brightening agents, so don't mind not having them in a detergent. In particular do not want flouresent agents on my bed linens.
In the United States, Cheer amoung a few other detergents does not contain OBAs.
L.