I have just submitted my 1st set of plans for permit in colour. It may be that your jurisdiction will not accept them so you should check first.
The custom home I just finished had fairly complicated roof framing so I used colours to differentiate the sizes of rafters etc in plan and then also in a 3d model view on the same sheet. I think colour has a lot of potential to better explain the drawings and it looks prettier too!
I usually get final drawings printed up by a print service but the difference in price between greyscale and colour was shocking so I ended up printing them up on my trusty HP650C (going on 16 years now! It just won't die). The print service wanted $5.00/sq.ft. even after I explained that they were cad drawings and not full ink posters.
Cheers,
Gerald
"The simplification of anything is always sensational" GKC
AC 25-4013 USA, CadImage Tools
2019 MacBook Pro 16" w/ AMD Radeon Pro 5600M GPU
OS X 11.6
2.4 Ghz 8 core i9, 64 GB RAM
27" LG 5K Monitor