It is not possible to replace the view Button in a region with a custom button to override it's look and behaviour.

I have an idea that would make customizing the entire Gui a lot easier. If all sub controls were in a FixedArray (even if there is only one), then it becomes very easy to replace all the sub controls with your own implementations.

For example, Region already has the two SlideBars in a FixedArray. The view button could also be put into its own FixedArray of just one element. This could be done with all controls across the entire Gui.

Available in next release

Very good. Thank you.