Examine source code of venturasunset

{
  "theme": {
    "images": {
      "theme_frame": "header.png"
    },
    "colors": {
      "frame": "#050202",
      "tab_background_text": "#f5eded"
    }
  },
  "version": "2.0",
  "name": "venturasunset",
  "manifest_version": 2,
  "description": "sunset at the marina, view through the masts of sailboats"
}