Tiles with Building Text - Layers or Selected State?

It looks like Walt answered while I was prepping my answer. Well, here's what I was going to say:

In the version with layers, the transitions would be smoother if (1) you make the color image exactly match the size/placement of the black-and-white image, and (2) you add Entrance Animations to the color images and/or add Transitions between the layers.

You can simplify the slide if you want the user to be able to click in any order: 

• The "buttons" on the base only need a Normal state.
• Delete the "Tile # Active" layers. They aren't needed. As long as the Slide Layer Properties are set so they don't hide other layers, each "Back Tile #" layer will show when the corresponding button is clicked, and it will remain on the slide. 
• Use T/F variables to track whether each layer has been shown.
• Add a trigger to each layer that changes NEXT to Normal when the layer's timeline ends with the conditions that all of the variables = True. 
  • Also add conditions to the trigger that disables NEXT to ensure it won't be disabled again if the user returns to the slide. 

This is shown in the attached file.