With the classic flour/Swedish paint recipe, it is not really possible to get a "beautiful" white hue because linseed oil yellows the mixture and iron sulphate browns it… This results in a slightly yellowish white, “dirty”… There is, however, an alternative to the traditional recipe, in which some ingredients are replaced by others, which Nathalie Boisseau presents in her book « La peinture suédoise » (writen in French).