Exactly as you say personal taste is all that's involved in customising a bike.
I knew two years ago that the GRiSO, with it's lines, was the bike I wanted as a mate to my 900 Cagiva Elefant, which I've rebuilt and modified, from the ground up.
All the work I'm doing is wank except the roller conversion.
However it's a buzz when people off the street are stopping by to admire her.
I love the GRiSO as much as I expected to and am trying to improve the aesthetics of something that's already great.