Good luck with it.
Your friend's car sounds like a cool project too, I'm still debating the final colour, I have a favorite one but I'll have to see a spray out first. I'm considering most original colours of the era except for red as its too safe and common and black as I find it dulls out the cars lines.
I've worked on it with him a few times and you can see why they were so expensive at the time. Compared to, say, an Escort, of similar vintage, it has about 3 times as many parts on it.
They do look good in red but I know what you mean.
I have another friend who has a 105 in a rather lovely blue which I'm not sure is factory but looks spectacular. That is also currently being restored (there's a theme here). He put it in for some tidying up and they uncovered some absolute horrors on the body from whoever has been at it before. I'll post a pic later if I can find one.
I have a third friend with a (complete, running, driving) 1300 Junior also in white with no bumpers and that looks about perfect.
(I should point out that I don't actively seek out Bertone Alfa owners and befriend them. I'm a still a member of an Alfa forum from my 156 driving days and a few guys local to me have been splashing the cash on old ones as there are no new ones.)