Looks awesome Mord, an incredible piece of terrain you've made there, I'm very jealous of your foldable terrain.

From the few comments about it looking weird, I think the weird comes not from the red (well not completely anyway). I think it is the white surrounding the windows on the outside of the building is too clean, by which I mean too white. The flecks of colour are a nice touch, but with the amount of wear on the rest of the building I would also expect the pristine white (or seemingly pristine from the photo) to have faded a bit. The same goes with the red to a certain degree I think. Maybe ink them a little?

Maybe its just rubbish what I've said and it is just the deviation from scifi's love of grey and brown that I find weird.

And congratulations! An amazing, finished model/piece of terrain

I think dumdeedum has a good point. Maybe adding a bit of wash around the windows and places where liquid would run and pool on the white areas. They you could stipple or sponge on a bit of damage in a dark brown colour where the paint has been damaged. Are you still planning to add a base?

Show us some pictures with models too! I want to see models peeking through all of your great windows!

I like it!
The only thing I'm not very fond of is the verdigris (hawk turquois) color. The walls look like conrete to me so that color on it seems out of place to me.

And indeed that board from Deaf's link is just plain sick!