Neutral colours of clothes will be just fine, better be in the safe side (like beige and yellow). Don't buy too much baby clothes as they out grow on them easily. Also, you'll be receiving so much gifts from cousins, friends and workmates.
Just buy what you need, hehe don't get too excited just yet as it will all come round.
Few vests, babygrows, newborn nappies, baby wipes and nursing pads will be your bestfriends. Hehe.
I'm sure you will enjoy motherhood.
P.S.
You may find loads bargains on prams, cribs and other nursery furniture at around Christmas & Boxing Day so better grab the opportunity.
Take care always xXxx