Read: 05 - Design webpages with CSS

CSS BACKGROUNDS

There are many CSS background properties to use: background-color

    background-image

    background-repeat

    background-attachment

    background-position

    background

These background property effect specific parts of the background elements in different way. Give them a try in VSCODE to see what you can create.

CSS COLOR

    You can change the color of text in various sections with CSS:
    body {
    color: red;
    }

    h1 {
    color: #00ff00;
    }

    p.ex {
    color: rgb(0,0,255);
    } 

Each one changes the color in different parts of in CSS. They them out and see what you come up with. You can search google for a color picker and come up with many different color schemes.