How to get non-image (plain) desktop background? [duplicate]

I don't want a background image on my desktop. Even the color background is a PNG image file. Want just a RGB color pick, or plain background.

Having a background image makes remote desktop too slow.

Ubuntu v19.04

2 Answers

this answer is targeted for RGB color option

1. Get your present background picture with the below command

gsettings get org.gnome.desktop.background picture-uri

Example:

pratap@i7:~$ gsettings get org.gnome.desktop.background picture-uri
'file:///usr/share/backgrounds/contest/bionic.xml'
pratap@i7:~$

2. Make the background picture to none with the below command

gsettings set org.gnome.desktop.background picture-uri ''

3. Now the background picture is none so the background will be the value of

gsettings get org.gnome.desktop.background primary-color

Example:

pratap@i7:~$ gsettings get org.gnome.desktop.background primary-color
'#000000'
pratap@i7:~$ 

4. Set the desired rgb value for primary-color with the below command

gsettings set org.gnome.desktop.background primary-color 'rgb(255, 173, 100)'

Example:

pratap@i7:~$ gsettings set org.gnome.desktop.background primary-color 'rgb(255, 173, 100)'
pratap@i7:~$ 

other gsettings points to know

gsettings get org.gnome.desktop.background color-shading-type
gsettings get org.gnome.desktop.background secondary-color

Alternatively you can use dconf-editor which can be installed with the below command

sudo apt install dconf-editor

Here are some options for selecting different backgrounds, including using a flat color:

"You can Change the image used for your backgrounds or set it to be a solid color.

1. Open the Activities overview and start typing Settings.
2. Click on Settings.
3. Click Background in the sidebar to open the panel.
4. Select Background or Lock Screen.
5. There are three choices displayed on top:

• Select Wallpapers to use one of the many professional background images that ship with GNOME. Some wallpapers change throughout the day. These wallpapers have a small clock icon in the bottom-right corner.

• Select Pictures to use one of your own photos from your Pictures folder. Most photo management applications store photos there. If you would like to use an image that is not in your Pictures folder, either use Files by right-clicking on the image file and selecting Set as Wallpaper, or Image Viewer by opening the image file, clicking the menu button in the titlebar and selecting Set as Wallpaper.

• Select Colors to just use a flat color.

6. The settings are applied immediately.
7. Switch to an empty workspace to view your entire desktop."