Thanks a lot for those ideas, but I have more than a 100 slides in my presentation and i don't want to double it or triple it , cos on each slide I need to change color of 3 items (toward translucide so they disappear). Once they changed , i dont come back.

I have record 3 macros, 1 for each shape, that change properties of the shape. They work, but if I put the shapes in the mask, this way they are available to the whole presentation, once in diaporama mode if clicked on it the macro doesn't launch.

Any ideas?