Order of the Chromatic Temple

From publisher blurb:

An order of paladins known as the Chroma Crusaders once resided in a keep known as the Chromatic Temple, with seven sects that each presided over a colour of the rainbow. However, the order fell to ruin as their leader was tempted to darkness, breaking his oaths, and the Chromatic Temple has since become a haven for undead fiends and demons. The players will have to relight all seven spires and do battle with the legendary fallen paladin hero in this high-stakes dungeon, filled with bombastic combat and colour/element-based puzzles.