> What if there's a product requirement to paint the shed red?

Then you argue over the paint brand, how much to buy at what price, rollers vs sprayers vs brushes, and so on.

Actually, often you do pull out your Pantone or HKS color matching cards to work out which specific red is required, whereas you don't care which brand etc. your print service uses.

(src: merchandise printing)

(Also, at one place I worked we bought some used server racks that we were told had been painted in a very specific company standard server rack beige by the previous owner megacorp.)