Chameleon Camouflage System

The Chameleon Camouflage System was a specialized camouflage system which allowed Snake to have his Sneaking Suit change color to match up with specific color shades and, to a certain extent, patterns.

Snake used this system while infiltrating a black ops facility suspected of holding a Metal Gear REX derivative. However, the device was rendered non-functional for the beginning of the mission due to Snake somehow managing to damage the device via his entry point, despite Snake's insistence that he had a clean entry, forcing Otacon to reboot the system. It eventually rebooted fully and had its problems fixed by the time Snake entered the first floor basement of the facility, with its bootup causing the sneaking suit to undergo several colors. and used the device to bypass several color-based security measures both by the original personnel of the facility and an unnamed terrorist group that Snake unwittingly allowed to take over the base due to manipulations by the group's commander. In particular, Snake used Red to bypass the Fusion Laboratory's entrance via a demonstration plackard, Green from the uniforms of the original personnel's corpses to bypass the security checkpoint at the Elevator near the Auxillary Corridor, and Khaki from the Terrorists uniforms in order to bypass the checkpoint near the Observation Area.

Behind the scenes
"CAMOUFLAGE Chameleon Camouflage System. Changes color of Snake's sneaking suit. Press the action key to select a color."

- Chameleon Camouflage System description in Metal Gear Solid Mobile.

The Chameleon Camouflage System, simply known as the Camouflage on the weapon menu, was equipment used for Metal Gear Solid Mobile. The player, due to the game's Mobile App-based nature, can use the real-world camera to take pictures, or otherwise take pictures in-game via the action button to get the color the player wants. The use of this camouflage is necessary for completing the game due to it allowing the player to bypass several security checkpoints that specifically require a color. The icon for the camouflage is the same one as the Stealth Camo.

Although the camouflage system itself is non-canon, similar camouflage systems were used in-canon, such as a similarly named camouflage system alluded to in the user manual for the MSX2 version of Metal Gear 2: Solid Snake, as well as the OctoCamo in Metal Gear Solid 4: Guns of the Patriots.