"en voir de toutes les couleurs" meaning in French

{
  "head_templates": [
    {
      "args": {},
      "expansion": "en voir de toutes les couleurs",
      "name": "fr-verb"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "French entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "French verbs with placeholder en",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with 1 entry",
          "parents": [],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "Pages with entries",
          "parents": [],
          "source": "w"
        }
      ],
      "examples": [
        {
          "english": "He's a fighter. He's been through hell, but he's never lost heart.",
          "text": "C’est un battant. Il en a vu de toutes les couleurs, mais il ne s’est jamais découragé.",
          "type": "example"
        }
      ],
      "glosses": [
        "to go through hell, to be put through the mill"
      ],
      "id": "en-en_voir_de_toutes_les_couleurs-fr-verb-JPgBdqc~",
      "links": [
        [
          "go through hell",
          "go through hell"
        ],
        [
          "put through the mill",
          "put through the mill"
        ]
      ],
      "synonyms": [
        {
          "word": "en voir des vertes et des pas mûres"
        },
        {
          "word": "en baver"
        },
        {
          "word": "en chier"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɑ̃ vwaʁ də tut le ku.lœʁ/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-en voir de toutes les couleurs.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/80/LL-Q150_%28fra%29-LoquaxFR-en_voir_de_toutes_les_couleurs.wav/LL-Q150_%28fra%29-LoquaxFR-en_voir_de_toutes_les_couleurs.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/80/LL-Q150_%28fra%29-LoquaxFR-en_voir_de_toutes_les_couleurs.wav/LL-Q150_%28fra%29-LoquaxFR-en_voir_de_toutes_les_couleurs.wav.ogg"
    }
  ],
  "word": "en voir de toutes les couleurs"
}

{
  "head_templates": [
    {
      "args": {},
      "expansion": "en voir de toutes les couleurs",
      "name": "fr-verb"
    }
  ],
  "lang": "French",
  "lang_code": "fr",
  "pos": "verb",
  "senses": [
    {
      "categories": [
        "French entries with incorrect language header",
        "French lemmas",
        "French multiword terms",
        "French terms with IPA pronunciation",
        "French terms with usage examples",
        "French verbs",
        "French verbs with placeholder en",
        "Pages with 1 entry",
        "Pages with entries"
      ],
      "examples": [
        {
          "english": "He's a fighter. He's been through hell, but he's never lost heart.",
          "text": "C’est un battant. Il en a vu de toutes les couleurs, mais il ne s’est jamais découragé.",
          "type": "example"
        }
      ],
      "glosses": [
        "to go through hell, to be put through the mill"
      ],
      "links": [
        [
          "go through hell",
          "go through hell"
        ],
        [
          "put through the mill",
          "put through the mill"
        ]
      ],
      "synonyms": [
        {
          "word": "en voir des vertes et des pas mûres"
        },
        {
          "word": "en baver"
        },
        {
          "word": "en chier"
        }
      ]
    }
  ],
  "sounds": [
    {
      "ipa": "/ɑ̃ vwaʁ də tut le ku.lœʁ/"
    },
    {
      "audio": "LL-Q150 (fra)-LoquaxFR-en voir de toutes les couleurs.wav",
      "mp3_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/80/LL-Q150_%28fra%29-LoquaxFR-en_voir_de_toutes_les_couleurs.wav/LL-Q150_%28fra%29-LoquaxFR-en_voir_de_toutes_les_couleurs.wav.mp3",
      "ogg_url": "https://upload.wikimedia.org/wikipedia/commons/transcoded/8/80/LL-Q150_%28fra%29-LoquaxFR-en_voir_de_toutes_les_couleurs.wav/LL-Q150_%28fra%29-LoquaxFR-en_voir_de_toutes_les_couleurs.wav.ogg"
    }
  ],
  "word": "en voir de toutes les couleurs"
}