There are many movies that you could be thinking of, but anything with synchronized swimming probably stars Esther Williams.
swimming
In 2008 the German swimming team wore black costumes and black swimming caps.
Yes, if you are swimming in a pool that has chlorine in it. Some other chemicals added to swimming pools to clean the water react with your hair. It can turn blond hair green and it can change the color if you have dyed or rinsed your hair color.
Maybe red
a red light, of course!
red
it doesnt change color, it will just fade because of the chlorene in the pool and the sun.
I am not sure if the salt would cause color loss, However the chlorine can.
The shortfin mako is grey blue on top, with a white belly.
It's a huge brown house with a large swimming pool out the back!
Color loss of what? You didn't specify loss of color on what. Tile, deck, plaster, clothing. In any case chlorine would be a more likely culprit.
you hold some one and think of a color if they guess the color you put them down and its your turn if they guess wrong you dunk them in the pool water