Is there any way to make these blocks not as big?
One evaluates the choices made from a list picker and then decides what to do based on the choice, and the other is just the startup screen. I've used procedures where I can, but other than that, I don't know how to reduce the amount of blocks.
On the third image, I need to add two more if/else if blocks that are just as big to the whenScreen1.initialise event handler.
All those color procedures should be combined into a single procedure, parametrized with the mode name.
The mode setter should look up the colors from a mode table and set the components.
You might need one or two extra procedures, depending on the scope of the effects, like a background setter procedure that takes the mode name or background color name as a parameter.
That should completely eliminate those combs of procedure calls, replacing them with single procedure calls providing the required background theme or mode name.
Thanks @ABG. I'll mess around with this to see how it works. I'll repost the .aia when I've figured out how to use the provided code in from the link. Still kinda a newb with app inventor, although I've come very far.