Examine source code of psychedelic art

{
  "manifest_version": 2,
  "version": "1.8",
  "name": "psychedelic art",
  "theme": {
    "images": {
      "additional_backgrounds": [
        "bckgr0.png"
      ]
    },
    "properties": {
      "additional_backgrounds_alignment": [
        "right top"
      ],
      "additional_backgrounds_tiling": [
        "no-repeat"
      ]
    },
    "colors": {
      "toolbar": "rgba(0, 0, 0, 0.5)",
      "toolbar_text": "rgb(255, 255, 255)",
      "frame": "rgb(0, 0, 0)",
      "tab_background_text": "rgb(255, 255, 255)",
      "toolbar_field": "rgba(0, 0, 0, 0.5)",
      "toolbar_field_text": "rgb(255, 255, 255)",
      "tab_line": "rgb(255, 255, 255)",
      "popup": "rgb(27, 0, 27)",
      "popup_border": "rgb(255, 255, 255)",
      "popup_text": "rgb(255, 255, 255)",
      "popup_highlight": "rgb(128, 0, 128)",
      "popup_highlight_text": "rgb(255, 255, 255)",
      "tab_loading": "rgb(255, 255, 255)",
      "ntp_background": "rgb(27, 0, 27)",
      "ntp_text": "rgb(255, 255, 255)",
      "sidebar": "rgb(27, 0, 27)",
      "sidebar_text": "rgb(255, 255, 255)",
      "toolbar_bottom_separator": "rgb(27, 0, 27)",
      "toolbar_field_border": "rgb(27, 0, 27)",
      "toolbar_field_border_focus": "rgb(255, 255, 255)",
      "toolbar_field_highlight": "rgb(128, 0, 128)",
      "toolbar_field_highlight_text": "rgb(255, 255, 255)",
      "toolbar_top_separator": "rgb(27, 0, 27",
      "tab_background_separator": "rgb(255, 255, 255)",
      "icons_attention": "rgb(255, 0, 255)"
    }
  }
}