Examine source code of tree in the light

{
  "name": "самотно дърво",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "самотно дърво.jpg"
    },
    "colors": {
      "frame": "rgba(229, 230, 232, 1)",
      "tab_background_text": "rgba(0, 0, 0, 1)",
      "toolbar": "rgba(117, 115, 115, 0.16)",
      "bookmark_text": "rgba(3, 3, 3, 1)",
      "toolbar_field": "rgba(255, 255, 255, 0.12)",
      "toolbar_field_text": "rgba(13, 13, 13, 1)"
    }
  }
}