One UI aspect can control one or more UI elements that are:
- Fixed and permanent (such as the background color or image of a UI button or the text color of a title)
- Temporary and/or moving (such as a spinning progress circle that indicates processing is in progress)
- Conditionally displayed (such as the color of text entered by the user, auto-completed text, or titles of parameters in a list)
The following are just some of the UI elements that your theme can control.