Examine source code of Witch Moon

{
  "name": "Witch Moon",
  "manifest_version": 2,
  "version": "3.0",
  "theme": {
    "images": {
      "theme_frame": "WitchMoon.jpg"
    },
    "colors": {
      "frame": "#143a47",
      "tab_background_text": "#e5fcff",
      "toolbar": "rgba(230, 229, 202, 0.06)",
      "toolbar_field": "rgba(0, 0, 0, 0)",
      "toolbar_field_text": "rgba(198, 211, 230, 1)"
    }
  }
}