I like the above colors as my business card but it didn't really go well with the rest of the package.
Then the green/gold colors went well with everything else but not the business cards.... =/
So as of now I'm using the green/gold. The green/gold version looks really nice in black and white.
I may end up just keeping it black and white.
I saw the below this morning ... its a brand identity for La Sal Gallery. The name was chosen with help of numerology and the whole idea was to combine two distinct subjects: salt and jewelry into one strong idea. So the designers went with an alchemical theme. They kept it very sleek/corporate looking to keep the scientific feel of it... But I just found it cool that the logo they came up with looked like it could be apart of mine! (source).