What colour for cardboard parts?

[N. W. Perry]

I don't want to get out into the weeds on this.  We're already too far, IMO, with the fabric colors.

Everything cardboard should be Sheet Cardboard and a user can define texture based on that.

That works for me. So, what's the right way to define a surface/texture/finish in LDraw?

We might, in that case, only need to define a color for raw, buff, unfinished cardboard. Similar to how we have a color for bare metal, for example.

(There might just be some concern among the color-keepers, who note that certain colors only exist as printing inks, and so forth.)