If I had a black bar I wouldn't need a theme I would run CM6 stock with no OC. Best rom so far!
Check cm forums or the first few pages of the RC1 thread here.
Black notifacation link below
Simple Black Bar for Froyo - CyanogenMod Forum
D1-DX-D2 Should've kept DX Waiting for UD, DX and D2 came out within 30 day exchage period.