Examine source code of ECGECFox

{
  "manifest_version": 2,
  "version": "1.4",
  "name": "ECGECFox",
  "theme": {
    "colors": {
      "frame": [
        58,
        103,
        157
      ],
      "tab_background_text": [
        255,
        255,
        255
      ],
      "button_background_hover": [
        88,
        130,
        179
      ],
      "button_background_active": [
        135,
        169,
        209
      ],
      "icons_attention": [
        58,
        103,
        157
      ],
      "tab_line": [
        135,
        169,
        209
      ],
      "tab_loading": [
        0,
        157,
        224
      ],
      "tab_selected": [
        135,
        169,
        209
      ],
      "tab_text": [
        255,
        255,
        255
      ],
      "toolbar": [
        135,
        169,
        209
      ],
      "ntp_text": [
        58,
        103,
        157
      ],
      "toolbar_top_separator": [
        135,
        169,
        209
      ],
      "toolbar_bottom_separator": [
        135,
        169,
        209
      ],
      "tab_background_separator": [
        135,
        169,
        209
      ],
      "toolbar_field_border": [
        135,
        169,
        209
      ],
      "popup": [
        240,
        245,
        250
      ],
      "popup_highlight": [
        224,
        234,
        246
      ],
      "popup_highlight_text": [
        0,
        0,
        0
      ],
      "popup_border": [
        135,
        169,
        209
      ],
      "popup_icons": [
        135,
        169,
        209
      ],
      "popup_text": [
        0,
        0,
        0
      ],
      "sidebar": [
        240,
        245,
        250
      ],
      "sidebar_highlight": [
        224,
        234,
        246
      ],
      "sidebar_highlight_text": [
        0,
        0,
        0
      ],
      "sidebar_text": [
        0,
        0,
        0
      ],
      "sidebar_border": [
        135,
        169,
        209
      ],
      "toolbar_field_highlight": [
        224,
        234,
        246
      ],
      "toolbar_field_highlight_text": [
        0,
        0,
        0
      ]
    }
  }
}