100W warm white CFL ?

HI all,
Just looking to switch my 100w CFL (500w equivalent) to the 'warm white' type since I have started flowering. My light is a simple Lights of America cheapy security light. Looks like it has a separate ballast. Does anyone know where (and if) I can get a warm white for that setup? All the ones I have seen have the ballast contained in the bulb itself but I don't think that will work for me.

Thanks.