Examine source code of Neien

{
  "manifest_version": 2,
  "version": "0.1",
  "name": "Neien",
  "theme": {
    "colors": {
      "frame": [
        225,
        206,
        154
      ],
      "tab_background_text": [
        255,
        255,
        255
      ],
      "button_background_hover": [
        146,
        109,
        39
      ],
      "button_background_active": "red",
      "icons": "black",
      "icons_attention": "red",
      "ntp_background": [
        200,
        173,
        127
      ],
      "ntp_text": [
        0,
        0,
        0
      ],
      "popup": "black",
      "popup_text": "white",
      "popup_border": "red",
      "popup_highlight": "red",
      "sidebar": [
        250,
        240,
        197
      ],
      "sidebar_highlight": "red",
      "sidebar_highlight_text": "white",
      "sidebar_text": "black",
      "sidebar_border": "black",
      "tab_background_separator": "red",
      "tab_line": "red",
      "tab_loading": "red",
      "tab_selected": [
        146,
        109,
        39
      ],
      "toolbar_top_separator": "black",
      "toolbar_bottom_separator": "black",
      "toolbar_field_border": "black",
      "toolbar_field_border_focus": "red",
      "toolbar_field_highlight": [
        204,
        0,
        0
      ],
      "toolbar_field_separator": "black",
      "toolbar_vertical_separator": "black"
    },
    "images": {
      "theme_frame": "NeienHead.png"
    }
  }
}