When you need colorful pvc windows,you need to have laminated pvc profiles.That laminotion done as below.Pls see the video below and get some idea how the profiles are laminated and what maim colors are mostly availible in stocks of pvc window producers.Acording to demand for sure your suppliers can have some order based stocks for your requests.   https://www.youtube.com/watch?v=La5Z7fZdo-c   https://www.youtube.com/watch?v=KYQu2DoU638   https://www.youtube.com/watch?v=paRw1qUSSWQ