In the Altar of Despair expansion it mentions the rules on Dark Glyphs and states they are purchased with Treachery points by the Overlord at the start of the quest of the APPROPRIATE COLOR. However, in the given example in the same area it has an Overlord player purchasing one type of Glyph (green) using red and purple Treachery points to do so!
So which is it? Does the Overlord have to spend the right color Treachery to the same color Glyph or can he/she spend any Treachery points for any color Glyph?
Thanks in advance!