Red floating candles are for those who want a powerful display of color.  Red floating candles look fabulous in bowls filled with black rocks or surrounded by rose petals.  Red floating candles will make a bold statement no matter where they are used.  Red is a very strong color, so adding small amounts of color to a room with red floating candles will make a more effective display than larger amounts of red.  Red floating candles will pop just enough to make a statement, but without dominating your display.