Is there a way to limit garment colour availability for a product other than duplicating the product / setting up the production method specific to that garment code?
Go to your decoration processes, under dtg you will see a ljnk called Smart Select Rules. open this.
From here you can tick the color types DTG supports ( White , light , dark).
This will go through and apply that process for these colors types ( not each color has a set color type).
We've bought "a baby" DTG that's good for white's & pastels but not darks, so it sounds right