I own three pair of Omega speakers with different finishes. Since I bought them secondhand I took what finishes were available. That being said, there are no bad finishes from Omega, only different tastes.
My Omega's include:
1. Super 3 in real Beech Veneer. My least favorite finish. Beech has almost no grain and a honey colored blonde finish. It is almost like Maple but not quite. It would match Heywood Wakefield furniture nicely though.
2. Super Alnico Monitor in real Zebrawood veneer. They are identical to Peter's monitors. This is a really great finish if you want something with a striking grain like Macassar Ebony but in a lighter color. This is the perfect finish to coordinate with lighter furnishings.
3. Super 3U in EKO Macassar Ebony. Great finish. The real Macassar Ebony is my favorite finish but this is my second favorite. These
http://imgur.com/a/sTckK are my actual speakers. They are almost identical in color and grain to these real ebony veneer cabinets
http://www.ebay.com/itm/Speaker-box-for-Fostex-FE126E-pair-ebony-Bass-Reflex-Type-/111969058186?hash=item1a11e03d8a:g:rKQAAOSwMmBV6qGZ which I also own.
This is a comparison of the real Ebony
http://omegaloudspeakers.com/superalnicomoni2.html and the EKO Ebony
http://omegaloudspeakers.com/super3xrsekoebon.html. The differences are largely in texture and are indistinguishable from the listening position. I will add that the quality of installation of both finishes is identical. There are no exposed edges and the wood veneer is thick.
I haven't seen it in person, but the "stock" finish that most appeals to me is the EKO Graphite Tweed. It deviates from the standard wood veneer look while retaining some movement and texture. But since a lot of Louis' work is custom in nature, if I were asking for a custom finish I would love something like the bookmatched Southern Redgum used by Devore
http://www.devorefidelity.com/images/o96.jpg.