Examine source code of Plain-Dark Gray

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Gray Slim V2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(29, 29, 29, 0)",
      "toolbar_text": "rgb(176, 176, 176)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(193, 193, 193)",
      "toolbar_field": "rgba(255, 255, 255, 0.08)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(93, 93, 93)",
      "popup": "rgb(28, 28, 28)",
      "popup_text": "rgb(136, 136, 136)",
      "button_background_active": "rgba(255, 255, 255, 0.29)",
      "button_background_hover": "rgba(192, 192, 192, 0.25)",
      "icons_attention": "rgb(1, 193, 255)",
      "icons": "rgb(242, 242, 242)",
      "ntp_background": "rgb(28, 28, 28)",
      "ntp_text": "rgb(245, 245, 245)",
      "popup_border": "rgb(0, 0, 0)",
      "popup_highlight": "rgb(125, 125, 125)",
      "sidebar_border": "rgb(0, 0, 0)",
      "sidebar_highlight_text": "rgb(1, 193, 255)",
      "sidebar_text": "rgb(189, 189, 189)",
      "sidebar": "rgb(28, 28, 28)",
      "tab_loading": "rgb(1, 193, 255)",
      "tab_selected": "rgba(112, 112, 112, 0.25)",
      "tab_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(11, 11, 11)",
      "toolbar_field_border_focus": "rgb(62, 62, 62)",
      "toolbar_field_border": "rgb(57, 57, 57)",
      "toolbar_field_focus": "rgb(28, 28, 28)",
      "toolbar_field_text_focus": "rgb(221, 221, 221)",
      "toolbar_top_separator": "rgba(0, 0, 0, 0.53)"
    }
  }
}