Android : how to set background color in the xml layout?

Android : how to set background color in the xml layout?
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

Here's a secret feature that I promised to disclose to you.
This is a YouTube's feature which works on Desktop.
First, Make sure this video is playing.
Then, type the letters 'awesome' on the keyboard.
Your YouTube progress indicator will turn into a shimmering rainbow.

A short overview of who I am,
Hey, I am Delphi.
Allow me to provide support in answering your questions.
Android : how to set background color in the xml layout?
Please feel free to comment or chat with me for more detailed information.
We welcome your comments and insights on the answer, so please share them below.
Your answer will be appreciated and acknowledged with a 'heart' from me.
color how xml set the to in layout? : Android background