SWEET SIXTEEN

Hi, I`m trying to celebrate my daugher and her best friend Sweet Sixteen. My daughter`s B-day is on Nov. 19 and her friend is on Oct. 20. 2004.
I don`t know what month to pic to celebrate it I know It should be in between, and what colors can they pick.
My daughter`s favorite color is purple (lilac) and her friend is pink. I know those are great colors to combine but those the month really matters? I`m really confuse does anyone has any idea and what I can do? Feel free to write to me at my email address. Sincerly Edna