A boy in a yellow t-shirt and pink sweater talks on a cellphone while riding a horse through a crowd of people who are looking on.
A boy has a white t-shirt and pink sweater
The boy who had a yellow t-shirt and pink sweater talking on a cellphone is not wearing white t-shirt and pink sweater.
One does not generally wear a yellow t-shirt and a white t-shirt at the same time.
yellow t-shirt is not white t-shirt