Which airspeed cannot be identified by the color coding of an airspeed indicator?

The maneuvering speed is not specifically identified by the color coding of an airspeed indicator because it is not a definitive speed limit like the others listed. The color coding on an airspeed indicator typically indicates critical airspeeds, such as the never-exceed speed (marked by a red radial line) and the power-off stall speed (indicated by a green or yellow arc). Approach speed, which is important during landing, is also usually indicated within the green arc.

In contrast, maneuvering speed is a calculated speed that varies depending on the aircraft's weight and load factor. It is the maximum speed at which full deflection of the control surfaces can be applied without risking structural damage and does not have a standard visual representation on the airspeed indicator. Therefore, while it is an important operational speed for pilots, it falls outside the parameters that the color coding of airspeed indicators typically provides.