Operating environment: Lenovo Xiao Xin Air 14Plus, Windows 10, Photoshopcs6, etc.

1. In ps, click File-New in the upper left corner to create a new canvas, and set the size according to your own requirements. When the settings are finished, click OK.

2. Set the foreground color, click the foreground color, select a favorite color in the pop-up dialog box, click OK, and then press and hold "Alt+Delete" to fill the color.

3. Set the background color, click the background color, select a favorite color in the pop-up dialog box, click OK, and then press and hold "Ctrl+Delete" to fill the color.

4. Click Edit-Fill. On the menu bar at the top of ps, find the edit option. Click Edit to open the drop-down menu. Find the fill option in the drop-down menu and click it.

5. Click the foreground color/background color, and click Fill to pop up the dialog box. Click the option box after Use, choose whether to use the foreground color or the background color, and then click OK. Color filling is complete.