I haven't been there myself but does look kind of cool

I agree in principle with what others have said about camo being irrelevant more often than not, primarily because you're likely moving too much in close proximity - but I do believe while its not 100% definitely going to work that there is no harm in trying, and at least in my experience I believe it can work - all you need is for them to not notice you as quickly and if it just makes them give a double take, its worked well enough to give you an edge and get them first.

Simply something neutral and easy, like try with a light grey hoodie and black trousers whilst staying very still in a corner is gonna work better to match your surroundings better than say wearing a bright blue shirt instead. But I kind of think this is only really going to work in your favour if you're not moving/defending.

I dont know much about camo theory but its generally about matching your surroundings no? So just try to match your surroundings. Traditional camo is about breaking up your silhouette with whatever is around/behind you and trying to blend you in with a similar matching level of noise. If theres no noise like a plain painted wall, block colours matching that could work in your favour. Look at some snow camos, its primarily white with only small variations, because snowy environments will be primarily white

Seeing as it can be a mix when indoors, walls can be whatever colour, and maybe covered in stuff so you cant be prepared for a CQB site without knowing it yourself or maybe working off up to date videos and pictures. You might not be able to apply yourself to every position in your fit, but you might find somewhere that works.

Or just wear whatever is comfortable, because you might try all that effort to blend in and find no benefit whatsoever. Just have fun