Examine source code of Dolch Theme

{
  "name": "Dolch Theme",
  "manifest_version": 2,
  "version": "1",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/bg-000-5672c42860d5b06e1058dc477397f3ef.svg"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "frame": "rgba(0, 0, 0, 1)",
      "frame_inactive": "rgba(36, 36, 36, 1)",
      "tab_text": "rgba(255, 255, 255, 1)",
      "tab_background_text": "rgba(170, 170, 170, 1)",
      "tab_line": "rgba(255, 0, 0)",
      "tab_loading": "rgba(255, 0, 0)",
      "toolbar": "rgba(63, 63, 63, 1)",
      "toolbar_top_separator": "rgba(35, 35, 35, 1)",
      "toolbar_bottom_separator": "rgba(35, 35, 35, 1)",
      "toolbar_vertical_separator": "rgba(35, 35, 35, 1)",
      "toolbar_field": "rgba(18, 18, 18, 1)",
      "toolbar_field_text": "rgba(200, 200, 200, 1)",
      "toolbar_field_border": "rgba(18, 18, 18, 1)",
      "toolbar_field_separator": "rgba(18, 18, 18, 0.2)",
      "toolbar_field_focus": "rgba(18, 18, 18, 1)",
      "toolbar_field_border_focus": "rgba(30, 30, 30, 1)",
      "button_background_hover": "rgba(255, 255, 255, 0.12)",
      "button_background_active": "rgba(255, 255, 255, 0.15)",
      "bookmark_text": "rgba(170, 170, 170, 1)",
      "popup": "rgba(18, 18, 18, 1)",
      "popup_text": "rgba(200, 200, 200, 1)",
      "popup_border": "rgba(18, 18, 18, 1)",
      "popup_highlight": "#21252B",
      "popup_highlight_text": "rgba(255, 255, 255, 1)",
      "ntp_background": "rgba(18, 18, 18, 1)",
      "ntp_text": "rgba(136, 136, 136, 1)",
      "sidebar": "rgba(35, 35, 35, 1)",
      "sidebar_text": "rgba(170, 170, 170, 1)",
      "sidebar_border": "rgba(18, 18, 18, 1)",
      "sidebar_highlight": "#21252B",
      "sidebar_highlight_text": "rgba(170, 170, 170, 1)"
    }
  }
}