Again, it's not clear what needs to made in order to get stuff. If we organize things into categories, it should make things easier for players.
So categories would be: basic systems (power, shields, thrust), weapons, effects, utilities (supply/drain, astrotech, salvager), decorations.
So basic systems use black OR white
and weapons use blue OR green materials
effects use purple OR red materials
utilities use orange OR yellow materials
and by "OR" I mean the recipes can all accept either of those colors. Give us a bit of flexibility.
decoration materials would depend on the color you wanted.
And let's have logical progression. A weapons computer should take weapons modules.
Also, we will need far more hull than metal grills or mesh. The base unit in crafting should be hull.