Basic demo xamarin forms app base - actual demo apps/functions will be built into or forked from this.
Custom Switch - Change Colour Based on On/Off State
See CustomControlPage example. I wrote a blog post about it.
Before implementation on Android. Note that you can't see the track of the
Switch when it's off ('false').
After adding some garish colours:
Just proving the concept on iOS. Before...
ListView Item Selection - Change its background colour:
See ListViewDemoPage example. I also wrote a short blog post about it.
(Apologies for the janky iOS gifs, they were done from the simulator running over a long-distance wifi connection)
Before implementing on iOS. Note that you can't tell when an item is selected.
After implementing on iOS (change selected colour to teal)
Before implementing on Android (ugh orange, from the default theme)
After implementing on Android (better, teal)