[Hectic]

Easy to id as theirs easy to find if droped and in a loadout to emulate real life units (like etf swat and other units as well)
Red would signafy regular ammo or live rounds or mags with tracers
Blue would often be for blanks or low velocity/subsonic rounds for use in silenced guns or when over penetration could pose a threat to civilians or other forces in the are. For swat or etf guys it could also be for less lethal options like rubber bullets