The GPU is a Crye Precision Australian Multicam pattern utilising blue and grey colours selected to reflect Air Force colours. The colours can be found in the Royal Australian Air Force's Service Dress uniform, the RAAF Ensign, and from airframes and airfields. The uniform whilst consisting of a disruptive pattern, is not intended to be used as camouflage in warlike operations or environments.[3][4]
GPU is notable and controversial for its inclusion of relatively bright, high-visibility shades of blue. As such it cannot serve as tactical battledress, even though the pattern resembles the original Multicam camouflage from Crye Precision. Hence, RAAF commanders have been criticised and queried regarding GPU's lack of functional versatility, across musterings, and a key rationale for the new uniform – the claim that its introduction will be cost neutral.[5]