Examine source code of Asena Theme

{
  "version": "1",
  "manifest_version": 2,
  "name": "Asena Theme",
  "author": "Alexander Lawrence",
  "description": "An elegant dark theme for dark nights",
  "theme": {
    "colors": {
      "frame": "hsl(216, 16%, 0%)",
      "toolbar_field": "hsl(216, 16%, 0%)",
      "ntp_background": "hsl(216, 16%, 0%)",
      "toolbar_field_focus": "hsl(216, 16%, 0%)",
      "popup": "hsl(216, 16%, 16%)",
      "sidebar": "hsl(216, 16%, 16%)",
      "toolbar": "hsl(216, 16%, 16%)",
      "tab_selected": "hsl(216, 16%, 16%)",
      "frame_inactive": "hsl(216, 16%, 16%)",
      "ntp_card_background": "hsl(216, 16%, 16%)",
      "tab_line": "hsl(216, 16%, 24%)",
      "popup_border": "hsl(216, 16%, 24%)",
      "sidebar_border": "hsl(216, 16%, 24%)",
      "toolbar_field_border": "hsl(216, 16%, 24%)",
      "toolbar_top_separator": "hsl(216, 16%, 24%)",
      "toolbar_bottom_separator": "hsl(216, 16%, 24%)",
      "toolbar_vertical_separator": "hsl(216, 16%, 24%)",
      "toolbar_field_border_focus": "hsl(216, 16%, 24%)",
      "icons": "hsl(216, 16%, 96%)",
      "ntp_text": "hsl(216, 16%, 96%)",
      "tab_text": "hsl(216, 16%, 96%)",
      "popup_text": "hsl(216, 16%, 96%)",
      "toolbar_text": "hsl(216, 16%, 96%)",
      "sidebar_text": "hsl(216, 16%, 96%)",
      "bookmark_text": "hsl(216, 16%, 96%)",
      "toolbar_field_text": "hsl(216, 16%, 96%)",
      "tab_background_text": "hsl(216, 16%, 96%)",
      "popup_highlight_text": "hsl(216, 16%, 96%)",
      "sidebar_highlight_text": "hsl(216, 16%, 96%)",
      "toolbar_field_text_focus": "hsl(216, 16%, 96%)",
      "toolbar_field_highlight_text": "hsl(216, 16%, 96%)",
      "popup_highlight": "hsla(216, 16%, 64%, 32%)",
      "sidebar_highlight": "hsla(216, 16%, 64%, 32%)",
      "toolbar_field_highlight": "hsla(216, 16%, 64%, 32%)",
      "button_background_hover": "hsla(216, 16%, 64%, 32%)",
      "button_background_active": "hsla(216, 16%, 64%, 32%)",
      "tab_loading": "hsl(216, 96%, 48%)",
      "icons_attention": "hsl(216, 96%, 48%)"
    }
  }
}