the Gray is well invisible but the instant his head is past the back-door, the color of the back-door is instantly added slightly to the entire suit.
The bits that should of still been invisible; also changed "slightly" by mixing in the color of the back-door.
going frame by frame shows the new texture dispersing from his head downwards.
The suit must use future-predictive cloaking based on natural-movements, but the Gray fucked up by poofie-pransy forward motion; so the predictive adaptive-camouflage feature made an error.
His last un-natural poffie-prancy forward movement involved more of his body-length than his previous forward actions; so the suits error become well visible.