I have a client that has stucco walls and then probably vinyl windows. The frame appears to be vinyl colored white. Customer wants c9's to outline the windows. I am wondering... I usually use hot glue and glue straight to the brick. I am wondering if hot glue will take the color off the vinyl frame. I do not want to hot glue to the stucco wall because I have done this before on stucco and it pulled a chunk of the stucco off. So, with vinyl window frames and stucco walls, what is the best way to attach c9's to around the windows. nails, screws, etc, are not an option per the customer... IDEAS?