Examine source code of Yellow mate

{
  "manifest_version": 2,
  "version": "1.0",
  "name": "Yellow mate",
  "theme": {
    "images": {},
    "properties": {},
    "colors": {
      "toolbar": "rgb(255, 200, 0)",
      "toolbar_text": "rgb(55, 55, 55)",
      "frame": "rgb(255, 255, 209)",
      "tab_background_text": "rgb(55, 55, 55)",
      "toolbar_field": "rgb(55, 55, 55)",
      "toolbar_field_text": "rgb(23, 180, 255)",
      "tab_line": "rgb(255, 200, 0)",
      "popup": "rgba(55, 55, 55, 0.6)",
      "popup_text": "rgb(255, 200, 0)",
      "button_background_active": "rgb(255, 255, 255)",
      "button_background_hover": "rgba(255, 255, 255, 0.5)",
      "icons_attention": "rgb(105, 0, 195)",
      "icons": "rgb(0, 130, 190)",
      "ntp_background": "rgb(105, 0, 195)",
      "popup_border": "rgb(255, 200, 0)",
      "popup_highlight": "rgb(23, 180, 255)",
      "tab_loading": "rgb(255, 200, 0)"
    }
  }
}