Differentiation of Colour

This is quite funny for me.

*** Things happen like this

When I was hyperly posting at kokorobox forum, and my dad was watching astro Wah Lai Toi channel 311 and the program was about those oldies movie which is black and white colour. Then, my dad wanted to tell me who is Chan Bou G. Then Ivery curious and ask which? As there is 4 female standing together. Remember the movie clip is black and white. And my dad answer me " Neh, the white shirt 1" . OOO, Yes ar... the white shirt 1.. so is which 1??!! lol