Everything goes from top to bottom, meaning duplicate items at the end will override the color setting at the beginning.
Blocks can be one item or many items - no color is set here, it just holds a list of items or tags
Text-Block: Any Text in the game can be assigned to this Block.
Keyword-Block: Any Keyword can be assigned to this Block. (to clarify Keyword here refers to things like MI, Epic, Resistance, Fire, Pet, etc.)
Mastery-Block: Adds the Mastery name after a skill name, it may also include point requirements. You may select an entire Mastery or (coming soon) individual skills.
A Module has Blocks assigned to it and a color can be set for each Block or the entire Module