Examine source code of mixed up.......

{
  "theme": {
    "images": {
      "theme_frame": "pinkandbrown.jpg"
    },
    "colors": {
      "frame": "rgba(229,230,232,1)",
      "tab_background_text": "#453108"
    }
  },
  "version": "2.0",
  "name": "mixed up.......",
  "manifest_version": 2,
  "description": "a mixed use of colours to use"
}