How to: Change the background color of a drawing in Paint.
Solution:
Use the fill tool on a new screen.
NOTE: This solution assumes that Paint is opened.
1) Select the 'File' menu and select 'New'. (A blank background appears.)
2) Click the fill tool in the tool box.
Fill tool
3) Click a color for the background in the color palette.
4) Position the pointer on the background and click. (The background changes to the desired color.)