two babies, one year.

Mallory
i found out i was pregnant dec. 14th i just had my son aug. 21st, and i bought him brand new travel system i've decided even if i'm having a girl this time i'm going to reuse the carseat since it won't even be a year old, but it's blue and gray, do you think that's smart to use the same travel system? or should i buy a girly one, if it's a girl?