On Sun, 14 Sep 2014 17:10:19 -0400, micky
wrote:

If the flapper is leaking, and I too suspect that, the coloring will
start to go into the bowl almost as soon as she adds it to the tank,

Pretty slowly, but not related to when the the water runs again. When
the water runs again for a few seconds, that will dilute the color in
the bowl slightly**, but when it stops, the color will get stronger
again until the next time the water runs, and so on, until the color in
the bowl is as strong as the color in the tank.

Of course it's almost impossible to tell how strong the color in the
tank is because its inside isn't nearly as white as the bowl, and the
light from the ceiling does't reach the tank as much as the bowl.

People in America are not like you. We don't live in Baltimore.

Try again! The bowl water will not change almost as soon as she adds
it to the tank. When the FLAPPER LEAKS, then you can understand what
really happens.