Christmas Parade in the City

Yes, It's the Christmas Season and there is a Christmas Parade in the city.I went with wai po and mummy to the city to see the Christmas float and i have lots of fun seeing all the bands marching, playing christmas song and colorful decorated floats. And best of all, Santa Claus, arriving on sleigh pulled by a school of cute little reindeers. I told mummy, if i can get to talk to Santa, i will tell him that I want a purple car for Christmas present. Mummy's reply ???? why purple car????