Well, it's better loking in my opinion than Harvey G's P5C.  Fewer protrusions.  It does have that matte black finish that the Europeans adopted years before the Americans started using it.  It's practical but not the prettiest finish.  Polish and blue the P88 and it would go a long way to "handsome-ing" it up.   Maybe even some wooden stock panels?

I found that wood stocks made my Teutonic P220 a lot nicer looking, if a bit too fat for shooting.

Image below from Mark Freburg - Image Title: .45 Auto
Image Info: SIG P220 .45 with smooth Pau Ferro wood grips from Hogue.