Examine source code of Meat

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#4d0c1b",
      "tab_background_text": "#e6aacb"
    }
  },
  "version": "2.0",
  "name": "Meat",
  "manifest_version": 2,
  "description": "I have this as my background for most things/websites so why not a theme?"
}