Ok few thing I learnt from working with a few dairy corporations.

Grain fed equals a white product. Which is why our cream gives a yellow tinge, our butter is yellow etc. something to do with our sun and the high level of chlorophyl in our grasses. The rumour that colouring is used is baloney due to labelling required. So whilst our dairy isn't always 100% grass fed. The level at which it is isn't always for laziness but for the welfare of the animal when there is no grass and they need to eat. Second to that areas that have year round grass fed cows provide milk to other companies in times of need. I know KID does this with a few of their other brands at certain times of year. My understanding was that in order to sustain year round grass fed animals you need to have the climate and environment to sustain that. And that isn't something doable with our huge level of dairy needed. And if everyone went 100% grass fed what impact would that have on the industry? The welfare of the animals etc?