workin with NULL in Conditional Split?

Hi,

I strucked-up in very basic SSIS , of course i am new to SSIS.

My question is

 i Have column "color"., it has values =Red, Black,Silver and NULL.

if i give  ISNULL(color=="Red"), then it moves values except NULL into one file and NUlls another file . But i want each different color into different file (Including NULL: NULL values  has to move into another file)

can anybody please help .

Thanks in advance