Wait for pixel change

Could someone please give me a method of how to:

1. Perform a sequence of actions

2. Wait for a pixel change

3. after the pixel change, proceed with another set of actions

4. wait for another pixel change

5. after the pixel change, proceed with another set of actions

6. wait for a pixel change

and so on and so forth?

Most of the repetitive tasks I have to perform on a computer are internet-based, and the amount of time it takes for the screen to change depends on my internet connection, so I can't set a wait time with a fixed number of seconds to perform the next sequence of actions.

I used the "while true" function with pixel search, but that keeps looping, but I want it to go to another set of actions automatically.

I love the macrowin interface, but I am old and can't figure this out!

Thanks!