If your bike is pre-1981, then it is only a sequential number. 1981 and later VINs must meet the federal requirement which includes mfg. location, model designation, model year code but no color indicator.
If you tell us year and model bike there are several places which have that info. (eg my 1979 CM400T and 1980 CM400A were available in Candy Holly Green and Candy Presto Red)