I would like to paint a stripe on my wall. I am trying to tape off the area so the line is straight. For some reason, the tape will not stick to the wall. The top of the wall is a tan and the bottom is a darker blue so a deep base paint was used. It sticks to the tan, but not the blue. Does the deep base have anything to do with it? I even tried duct tape and that will not stick either (but does stick to the tan). Is there an alternative tape I can use or another method where tape is not needed?