Usually larger events in the west do share a standard. What they do, is post up Alpha/blue patterns (tan), and bravo/red patterns (green). And then during registration, they will close one side if the numbers become unbalanced. Basically forcing people to either; wait until Bravo catches up to Alpha in registration, "or" wear a different pattern. Some camo like black or night stalker for example, will be used to balance teams later. But it is 9/10 times most patterns can't switch.
So if your team wears woodland predominantly, and green team is full or has more registered than tan, you have to switch camo patterns to tan if your team would like to attend the event. Or hope there is a large influx of tan in the registration.
Most serious milsims are even going specific patterns only. Such as multicam (and variations), against woodland (and variations). If you don't own one of those patterns; you don't attend. This is why I am asking about it being accepted as green or tan in this system.
ďREALITY IS LIKE A STONE. TO MANY ITíS HARD AND COLD, THEY CANíT HUG IT OR EAT IT, IT ONLY FRUSTERATES THEM AND DOESNíT DO THEM MUCH GOOD. TO OTHERS ITíS STRONG AND DEPENDABLE, YOU CAN BUILD WITH IT, BUILD UPON IT, OR WORK WITH IT, ALSO USE IT TO SMASH PEOPLE IN THE FACE.Ē