Set Background color for row based on month ?

Hi,

I am doing SSRS report.

I have FromDate column  and I would like to set background color for row if month(FromDate) is 'n' months back .

Ex: 1) Month(FromDate) is 12 and Month(GetDate()) is 2 then background color should be green.

2) Month(FromDate) is 10 and Month(GetDate()) is 4 then background color should be Yellow.

3) Month(FromDate) is 9 and Month(GetDate()) is 5 then background color should be Red.

4) Else Blue

Please help me to do solve this.

Thanks..