We want to have multiple products on 1 manufacturing order; example: a product that needs to be colored. Coloring isn't something we do in-house, but it is a "service" done by a supplier (so not a product):

PRODUCT A:
    - black 10x
    - red 30x

PRODUCT B:
    - black 5x
    - green 12x

Now we need to make a manufacturing order for each product, and for each color, which causes a lot of work.

A solution that is driven by the color would also work, eg:

BLACK:
    - 10x Product A
    - 5x Product B

RED:
    - 30x product A

GREEN:
    - 12x Product B