At Saturday's tournament, the issue of colossal adjacency to elevated characters (for the purposes of a close combat attack, mainly) )came up. I could have sworn in the past the rules covered it, but couldn't find anything. At the the tournament, it was ruled that they can make cc attacks, but I wanted to confirm for the future.

Colossal Size is very poorly written.

You should be allowed to do it.

So it sounds like something else for the next PG then, thanks!

All of the colossi (Plural for Colossal) prior to Anti-Monitor (both versions) had it written into their personal rules that they occupied all elevations at the same time.

That would have been relevant in this specific case, since it involved one of the Sentinels,* but if it's meant to be a general rule, it should be added to the PG.

*I realize the PG is uncomfortably long for some already, but it would make sense to add the special rules to the PG, in case an opponent doesn't bring them with them to a tournament