src/models/ColourCollection.js

const mongoose = require('mongoose');

const colourCollectionSchema = new mongoose.Schema(
  {
    name: { type: String, required: true, unique: true },
    description: { type: String },
    colours: [{ type: mongoose.Schema.Types.ObjectId, ref: 'Colour' }],
    isActive: { type: Boolean, default: true },
  },
  { timestamps: true }
);

module.exports = mongoose.model('ColourCollection', colourCollectionSchema);