Examine source code of Gruvbox_v2

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Gruvbox_v2",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-001-9c6d74e14860e77ee6f8f43e824bff25.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgb(29, 32, 33)",
      "toolbar_text": "rgb(251, 241, 199)",
      "frame": "rgb(60, 56, 54)",
      "tab_background_text": "rgb(251, 241, 199)",
      "toolbar_field": "rgb(40, 40, 40)",
      "toolbar_field_text": "rgb(251, 241, 199)",
      "tab_line": "rgb(29, 32, 33)",
      "popup": "rgb(29, 32, 33)",
      "popup_text": "rgb(251, 241, 199)",
      "button_background_hover": "rgb(204, 36, 19)",
      "frame_inactive": "rgb(29, 32, 33)",
      "icons_attention": "rgb(40, 40, 40)",
      "icons": "rgb(254, 128, 25)",
      "ntp_background": "rgb(40, 40, 40)",
      "ntp_text": "rgb(254, 128, 25)",
      "popup_border": "rgb(40, 40, 40)",
      "sidebar_border": "rgb(40, 40, 40)",
      "sidebar_highlight_text": "rgb(204, 36, 19)",
      "sidebar_text": "rgb(251, 241, 199)",
      "sidebar": "rgb(29, 32, 33)",
      "tab_loading": "rgb(254, 128, 25)",
      "tab_text": "rgb(184, 187, 38)",
      "toolbar_field_border": "rgb(40, 40, 40)",
      "toolbar_field_highlight": "rgb(204, 36, 19)",
      "toolbar_field_separator": "rgb(254, 128, 25)",
      "toolbar_vertical_separator": "rgb(254, 128, 25)"
    }
  },
  "browser_specific_settings": {
    "gecko": {
      "id": "{545acbb0-f144-4465-a9ac-6a5f1ad35491}"
    }
  }
}