This simple extension removes faction underlays (the red/green/blue square around tokens), replacing it (only when selecting a token) with a translucent grey tone, in order to distinguish between the creature's reach underlay and its actual, occupied space.

In other words, it gives characters more cohesion with their environments (+2 Immersion).

Other Free Thinkcrown💀Studio extensions: Boss Bar Beta (gives your bosses a bigger, more-badass looking health bar)