By dark you mean dark attitude or you are reffering to the ammount of shaddow/light in the engraving? A mistery feel is hard to get in logo. shadow/light play is one of the ways to do it.
I've uploaded 2 more designs in different colors. If you have a color that you prefer please let me know. Please let me know your opinion about the new ones.
Last entrys have more details on them than the first. Please check them. I will return tommorow with even more detail. Just wanted to know if this is the direction you want.