I am currently designing the UI for my first Android app. Android (obviously) lets you design any and every element in your app using XML.
On any elements where you leave the "default" (holo) theme on, will that element appear different on different devices. Certain widgets (such as the spinner) match my theme perfectly but I was curious as to whether they will appear different on different versions of Android.
I am designing for Android 4.4.2.