Seven Seasons is an addon that tracks the actual type of damage taken by you and your party members. It can be used for pallys to determine which aura should be used during combat.
Since there are 7 damage types (Physical, Holy, Fire, Nature, Frost, Shadow and Arcane) the addon is called "Seven Seasons". It provides you with a moveable window and a bar for each damage type.
It displays the total damage taken by your group at the top and the percentages and absolute amounts per damage type in the bars.
It has a few options: