Yes, the adhesive will take colour pigment but since the adhesive is a clear colour (colourless) it is unnecessary. Please practice on scrap pieces first. For best results use the adhesive alone then align the parts perfectly with a seam setter or equivalent then apply the activator for an instant cure. Give this method a little more time to cure (about 30 seconds) because you have only applied the adhesive to one side. This allows more time to align parts or else it will make an instant contact and not permit time for alignment of parts. If time is not an issue the activator is not required but you will have to give the seam approx, 10 minutes to cure on its own.