Examine source code of Black Relax

{
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-037-b73f9b34467ba541de861f5b4c0c6316.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "tab_selected": "#606060",
      "tab_text": "#ffffff",
      "toolbar": "#606060",
      "frame": "#3a3a3a",
      "tab_background_text": "#ffffff",
      "frame_inactive": "#0c0c0c",
      "ntp_background": "#2a2a2a",
      "ntp_text": "#ffffff",
      "sidebar": "#2a2a2a",
      "sidebar_border": "#4b4b4b",
      "sidebar_highlight": "#2a2a2a",
      "sidebar_text": "#000000",
      "sidebar_highlight_text": "#000000",
      "tab_background_separator": "#000000",
      "button_background_active": "#808080",
      "button_background_hover": "#7a7a7a",
      "icons": "#ffffff",
      "icons_attention": "#03d5fa",
      "popup": "#4a4a4a",
      "popup_border": "#676767",
      "popup_highlight": "#808080",
      "popup_highlight_text": "#ffffff",
      "popup_text": "#ffffff",
      "tab_line": "#838383",
      "tab_loading": "#c0c0c0",
      "toolbar_bottom_separator": "#808080",
      "toolbar_field": "#c1c1c1",
      "toolbar_field_border": "#2a2a2a",
      "toolbar_field_border_focus": "#808080",
      "toolbar_field_focus": "#2a2a2a",
      "toolbar_field_text": "#2a2a2a",
      "toolbar_field_text_focus": "#ffffff",
      "toolbar_field_highlight": "#808080",
      "toolbar_field_highlight_text": "#ffffff",
      "toolbar_text": "#ffffff",
      "toolbar_top_separator": "#868686",
      "toolbar_vertical_separator": "#c0c0c0"
    }
  },
  "name": "Black Relax",
  "manifest_version": 2,
  "version": "2.1",
  "description": "Un tema moderno oscuro / negro grisáceo. Su color ayuda a realizar una buena visualización sin tener que esforzar la vista y así ayudar a que tu visión esté más relajada."
}