Positive color only. I read and followed the instructions but still had a negative result, application issues to contend with. Disadvantages 1) The adhesive does not stay flat against the wall, additional adhesive must be used on the top edge. The glue is sticky, but after it's freed from hands and scissors, "the sticky mess is gone." 2) I had to use a construction stapler to press it against the wall so the glue would grab. 3) Didn't lay flat against the wall even when set up for two days to level, had ripples when put against the wall.