Yes, you can put colorless cards in Commander since colorless cards have no color identity
I was getting in more 1v1 commander games so it's a bit more geared towards dueling, as opposed to brawling in a multiplayer setting, but I made efforts to try to reduce how much mana I had to invest into Jenara to ramp up her damage
It effectively neutralizes Sunforgers activated ability and blunts the impact of Rishkars Expertise
Whats even better is that some Rooms are actually removal, such as Cramped Vents // Access Maze, Glassworks // Shattered Yard, and Restricted Office // Lecture Hall
Do you like the swirling chaos of Raymond Swanlands work (Warstorm Surge, Thraximundar), the movement and action in Jesper Ejsings art (Colossal Dreadmaw, Epic Proportions), or maybe the serene, quiet landscapes from Bob Ross