Once WordPress is installed, you can change the background color automatically for all future posts by directly editing the "Single Post" file found in the "Editor" section of the Appearance menu.

By default all the switches in the Colors menu are turned on. Automatically, pick an accent color takes your background and choses a highlight from it. Switch it off to choose your own background.

To set the color permanently, you have to go to the color picker for Background: Color & Effects in the Profiles settings and select the color. Macworld is your best source for all things Apple.

2) Make sure the "Replace Document Colors" is checked and click on Custom Color. 3) Click "Page Background" color and then select "other color." Here's my custom neutral color settings: ...

WhatsApp is adding new choices for customizing your chats, with both preset themes and mix-and-match colors for backgrounds ...