What do candles black signify?

Black candles can signify many different things. They are mostly associated with rites and spells regarding the death of an individual (not necessarily something negative) They are associated with the sabbat Samhain. They are also at times used for magickal workings of a negative nature. All colors and shades have a believed vibration that makes them unique to use in certain circumstances, however, should you feel that black represents love to you as opposed to using pink or red (which are commonly used "love" colors) than by using the commonly accepted color in lieu of the color you feel is most appropriate you are hindering your working. To sum it up, it is all about your personal interpretation and not really what the masses believe about something.