Contributed to the opencv/opencv repository by enhancing QR code detection visualization in the qrcode.py sample. Developed a feature that assigns a unique color to each detected QR code using a new QR_COLORS palette, allowing for clear differentiation when multiple codes are present in an image. This approach improved the clarity of detection results, making it easier for users to debug and demonstrate multi-QR scenarios. The work involved end-to-end feature delivery, including code review, testing, and integration through the GitHub pull request workflow. Utilized Python, computer vision, and image processing skills to address a practical visualization challenge in the project.