title: Consistent UI color in all Android devices
body: <p>I noticed the UI color (eg Button background/text color) all changes from device to device, based on the current theme that is being used in a device.</p>
  
  <p>What is the best practice to apply custom UI colors for Android app, so that I have same color scheme for my app in all Android devices. I can set text/background color on a UI item. I'm wondering if there is a single place where I can define all the colors which will override the current theme applied on the phone.</p>
  
  <p>thx.</p>