Examine source code of Blue & Black emo theme :3

{
  "name": "Blue & Black emo theme :3",
  "manifest_version": 2,
  "version": "1.0",
  "theme": {
    "images": {
      "theme_frame": "header by aze.jpg"
    },
    "colors": {
      "frame": "rgba(255, 255, 255, 0)",
      "tab_background_text": "rgba(51, 153, 255, 1)",
      "toolbar": "rgba(255, 255, 255, 0.5)",
      "bookmark_text": "rgba(3, 101, 222, 1)",
      "toolbar_field": "rgba(139, 187, 245, 0.56)",
      "toolbar_field_text": "rgba(20, 73, 199, 1)",
      "tab_line": "rgba(0, 85, 255, 1)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{20c2b487-8ed0-4add-905f-9f79eca1c717}"
    }
  }
}