Pink colour symbolize girl , agree...
But why Blue colour for guys?
Most Helpful Guy
Ladies' Home Journal article in June 1918 said, "The generally accepted rule is blue for the boys, and pink for the girls. The reason is that blue, being a more decided and stronger color, is more suitable for the boy, while pink, which is more delicate and dainty, is prettier for the girl."Apr 11, 2011
The History Of Blue For Boys, Pink For Girls2