When a hider gets found
Do not repaint everything at once. Name the first clue the seeker probably saw: motion, outline, brightness, material, shadow, or implausible placement. Change only that layer on the next attempt. If the second hide lasts longer, you learned something reusable even though the location changed.
For example, a nearly perfect wall color can still fail because two dark feet cross a bright baseboard. The useful correction is not “find a darker wall”; it is “inspect the boundary where the body meets the environment.” That rule transfers to every map.
When a seeker misses someone
Reconstruct your search route before blaming the disguise. Did you scan only at eye level? Did two seekers repeat the same room? Did you stop moving and lose the parallax clue? Choose one missed category and add it to the next pass.
A simple team callout can be more valuable than faster movement: name the area, the scan height, and whether you viewed it from both directions. That gives the next seeker new information instead of another vague “nothing here.”