This is an example how to change your post color scheme for specific posts. You can simply add the following variables to your post front-matter field:
scheme-text: "#0029ff"
scheme-link: "#ff00b4"
scheme-hover: "#ff00b4"
scheme-code: "#ad00ff"
scheme-bg: "#00ebff"
scheme-hero-text: "#00ebff"
scheme-hero-link: "#00ebff"
scheme-hero-bg: "#0029ff"
You can also ignore other variables if you only want to change the background:
scheme-bg: "#00ebff"