Livestock
I think the critics should think awhile before comment. Sure Fresian Cows are black and white. At the Agriculture shows they are powdered with chalk and in some cases talc, black markings oiled to look jet. Prior to this treatment they are washed and washed again. The photo shown is of one of these cows. The cows produced for the screenshot were produced to resemble a dairy herd coming in from pasture for early morning milking. I can only assume Vendal has never been held up on a country road in the UK behind a herd of Fresian Cows in early spring a few days out at first grass.
The dung from these cows is almost liquid and realy green. Think of it anything from 50 to 200 cows. at first waiting close packed to driven across fields or down country roads. Then packed tight in a holding yard while they wait thier turn to go into the milking parlour, Standing flicking muck covered tails against each other splashing chests shoulders and backs to show a fine green sheen on their neighbour. Remember we in the UK have long wet cold winters and very damp, somtimes warm summers. You get dirty just walking in the fields,and theses cows lay in them. We produce some of the best breeding stock in the world, but may be due to our climate, not the cleanest every day cow. Hence the marine green sheen!. Loco's and Rolling Stock look great weathered so why not cows.