What kind of wax do you use? soy, paraffin, blends, etc? Container waxes are generally of a lower melting point than pillar wax. That means the pillar wax will not melt as easily as the softer container wax and the scent throw won't be good because there will not be a big enough melt pool to reach the edges of the container. The pillar wax would probably burn a "tunnel" in the middle of the container. The wick would probably drown out. Brightness of color is determined by the wax, scent, and possibly other factors. You should not have to poke relief holes in your container candle if you use a container wax for that purpose, maybe just top it off. I would suggest using a wax meant for containers--testing your wax,scent, wick, dye, etc. There are many types of wax that you could test, maybe order a sample of a particular one. Some may suggest wicking up if you use the pillar wax, but as for me, I don't feel comfortable with that, why do that when a container wax blend, paraffin, soy or whatever you choose to go with will work the way its intended. Good luck and htp