Examine source code of Black Stain

{
  "theme": {
    "images": {
      "theme_frame": "Header.png"
    },
    "colors": {
      "frame": "#828282",
      "tab_background_text": "#5250d9"
    }
  },
  "version": "2.0",
  "name": "Black Stain",
  "manifest_version": 2,
  "description": "I made this using GIMP. I used to use this as my wallpaper, but I just wanted to see what it would look like as a Persona."
}