Upon reading past news I see that new recipes (signs, cash register etc)have been added that require white dye. The recipe and yield from white flowers have remained the same through these additions though.
I suggest that white flower in the recipe should be dropped to 1 as is the case of other flowers. Also change the yield from 5-10 to 15-25 like black dye is when it is made from combining coal with oil.
White dye can only be made one way and all the rest of the dye can be made more than one way. Also white dye is needed to make grey dye and can also be used to make pink dye.
Another idea is to introduce the wild flowers from deep forests to the dye recipes, specifically the white ones.
I know this change is very possible because artifact dust was just changed from 1 to 10 in short order.