Traditionally called a ten hour votive, this refers to the size of the votive candle.
Each color can represent many things:
Black: Protection, uncrossing, warding off attack
White: Cleansing, purifiction, new beginnings
Pink: Understanding, friendship, romance
Red: Love, passion, drive
Orange: Creativity, energy, sunshine
Yellow: Abundance, joy, happiness
Green: Fertility, growth, finances
Light Blue: Peace, tranquility, honesty
Blue: Protection, clarity, communication
Lavender: Emotional and spiritual healing, intuition, gentleness
Purple: Intuition, royalty, abundance