Help me identify this video:
The boy is colorful like you and me, and the "colorless people are like black, white and grey".
At the end of the video, she (artist / hidden colorful person) leads him to more colorful people and world. The security guards who followed them are shocked. In the behind the scenes they reveal a character was played by twins who distributed screen time.
I think the video might've been from the 2000s. It was probably pop, but I'm not 100% sure.