Examine source code of Prismatic Dark

{
  "manifest_version": 2,
  "version": "1.2",
  "name": "Prismatic Dark",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "images/0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "center top"
      ],
      "additional_backgrounds_tiling": [
        "repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(83, 97, 105, 0.33)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(155, 153, 177)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(83, 97, 105, 0)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(83, 97, 105, 50)",
      "popup_text": "rgb(255, 255, 255)",
      "button_background_active": "rgb(83, 97, 105)",
      "icons_attention": "rgb(255, 220, 0)",
      "icons": "rgb(255, 255, 255)",
      "ntp_background": "rgb(83, 97, 105)",
      "ntp_text": "rgb(255, 255, 255)",
      "popup_border": "rgb(83, 97, 105)",
      "sidebar_border": "rgb(83, 97, 105)",
      "sidebar_highlight_text": "rgb(255, 255, 255)",
      "sidebar_highlight": "rgb(101, 116, 124)",
      "sidebar_text": "rgb(255, 255, 255)",
      "sidebar": "rgba(83, 97, 105, 0)",
      "tab_background_separator": "rgba(189, 189, 189, 0)",
      "tab_loading": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(83, 97, 105)",
      "toolbar_field_border_focus": "rgb(83, 97, 105)",
      "toolbar_field_border": "rgba(101, 116, 124, 0)",
      "toolbar_field_focus": "rgba(83, 97, 105, 50)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgb(101, 116, 124)",
      "toolbar_field_separator": "rgba(101, 116, 124, 0)",
      "toolbar_top_separator": "rgba(101, 116, 124, 0)",
      "toolbar_vertical_separator": "rgba(101, 116, 124, 0)"
    }
  }
}