Examine source code of Dark Transparent Blue

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Dark Transparent Blue",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.jpg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(204, 199, 199)",
      "tab_background_text": "rgb(113, 168, 238)",
      "toolbar_field": "rgba(20, 25, 22, 0.89)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgba(62, 94, 135, 0.75)",
      "popup": "rgba(0, 0, 0, 0.89)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgba(33, 51, 74, 0.75)",
      "button_background_hover": "rgba(62, 94, 135, 0.75)",
      "frame_inactive": "rgba(255, 255, 255, 0.74)",
      "icons_attention": "rgb(114, 171, 245)",
      "icons": "rgb(121, 177, 249)",
      "ntp_background": "rgba(57, 57, 57, 0.81)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgba(62, 94, 135, 0.75)",
      "popup_highlight_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(38, 38, 41)",
      "sidebar_border": "rgba(62, 94, 135, 0.75)",
      "sidebar_highlight_text": "rgb(0, 0, 0)",
      "sidebar_highlight": "rgb(105, 156, 222)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(0, 0, 0)",
      "tab_background_separator": "rgba(238, 235, 238, 0.51)",
      "tab_loading": "rgb(111, 166, 236)",
      "tab_selected": "rgba(0, 0, 0, 0.69)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgba(255, 255, 255, 0)",
      "toolbar_field_border_focus": "rgb(0, 0, 0)",
      "toolbar_field_border": "rgba(62, 94, 135, 0.75)",
      "toolbar_field_focus": "rgba(57, 75, 98, 0.77)",
      "toolbar_field_highlight_text": "rgb(125, 181, 252)",
      "toolbar_field_highlight": "rgb(0, 0, 0)",
      "toolbar_field_separator": "rgb(113, 169, 241)",
      "toolbar_field_text_focus": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgba(255, 255, 255, 0)",
      "toolbar_vertical_separator": "rgb(111, 167, 238)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{c056bca0-7780-4680-88e0-45f26391a3cb}"
    }
  }
}