#4 Chars are perfect. Need to get rid of black area and the symbol should be more simpler and smaller and may be used in first "o" like #10. Gold is ok. Turquaz-Red combination doesn't seem well.
#10 and #4 Characters (obc) are well but not "s". First symbol (#10) is close but not finished and it is big. #23 loved "s" Character, and all chars give the effect of abacus, symbol is bad.
So what I came is: main color: blue #28 chars: #10 o,b, and c - #23 s