"flying colours" meaning in English

{
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "flying colours pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        {
          "kind": "other",
          "name": "English entries with incorrect language header",
          "parents": [
            "Entries with incorrect language header",
            "Entry maintenance"
          ],
          "source": "w"
        },
        {
          "kind": "other",
          "name": "English pluralia tantum",
          "parents": [
            "Pluralia tantum",
            "Nouns",
            "Lemmas"
          ],
          "source": "w"
        }
      ],
      "examples": [
        {
          "text": "I just barely passed the exam. No flying colours."
        },
        {
          "text": "She sailed through the job interview with flying colours."
        }
      ],
      "glosses": [
        "Great success."
      ],
      "id": "en-flying_colours-en-noun-BxKsDaDV",
      "links": [
        [
          "with flying colours",
          "with flying colours"
        ],
        [
          "success",
          "success"
        ]
      ],
      "raw_glosses": [
        "(usually in the phrase with flying colours) Great success."
      ],
      "raw_tags": [
        "with flying colours"
      ],
      "synonyms": [
        {
          "english": "US spelling",
          "word": "flying colors"
        }
      ],
      "tags": [
        "UK",
        "phrase",
        "plural",
        "plural-only",
        "usually"
      ]
    }
  ],
  "word": "flying colours"
}

{
  "head_templates": [
    {
      "args": {
        "1": "p"
      },
      "expansion": "flying colours pl (plural only)",
      "name": "en-noun"
    }
  ],
  "lang": "English",
  "lang_code": "en",
  "pos": "noun",
  "senses": [
    {
      "categories": [
        "British English forms",
        "English entries with incorrect language header",
        "English lemmas",
        "English multiword terms",
        "English nouns",
        "English pluralia tantum"
      ],
      "examples": [
        {
          "text": "I just barely passed the exam. No flying colours."
        },
        {
          "text": "She sailed through the job interview with flying colours."
        }
      ],
      "glosses": [
        "Great success."
      ],
      "links": [
        [
          "with flying colours",
          "with flying colours"
        ],
        [
          "success",
          "success"
        ]
      ],
      "raw_glosses": [
        "(usually in the phrase with flying colours) Great success."
      ],
      "raw_tags": [
        "with flying colours"
      ],
      "tags": [
        "UK",
        "phrase",
        "plural",
        "plural-only",
        "usually"
      ]
    }
  ],
  "synonyms": [
    {
      "english": "US spelling",
      "word": "flying colors"
    }
  ],
  "word": "flying colours"
}