It's generally recommended to wear colored contact lenses for up to 8 hours per day. This will vary based on the specific type of lens you have and the recommendations of the manufacturer. Some lenses, such as daily disposables, are designed to be worn for a single day and should be removed and discarded before bedtime. Others, such as extended wear lenses, may be approved for overnight wear. It's important to follow the recommended wearing schedule for your specific lenses to ensure the health and comfort of your eyes. If you experience any discomfort or irritation while wearing your contacts, be sure to remove them and seek guidance from a professional if necessary.