The Conseil d'Etat discussed a colour of the Grand Armee's colours, as indigo dye was expensive and was shipped from Britain. Napoleon said: "It would be no small economy to dress the troops in white, though it may be said, truly enough, that they have succeeded pretty well in blue. I don't think, however, that their strength lies in the colours of their coats, as that of Samson did with the length of his hair." Other considerations against having white uniforms were how filthy they could get during campaign and the blood they'd show . It was just a failed experiment to cope with the hard-to-come-by indigo dye.