Lot of errors in your code.
Don't try to write a lot then to run the code, try to make incremental, small changes each time, and check it still run.

You have two closing braces at the end of draw(). Remove one.
You have semi-colons at the end of the if tests. Remove them.
Your tests are outside of any function, that's not good. You should put the code inside the mousePressed() function, then you don't need the mousePressed boolean test.
You can use get() to check the color under the mouse cursor.

Your mousePressed checks are very strange and don't work. You should look at tutorials for point in rectangle or point in circle code (the equivalent of mouseX and mouseY being inside a shape).