I came across a rather nice texture, which I attached to this post.
I also hope you'll add some lianas or something - remake still looks a bit empty comparing to the original (but that's just me being picky <_<). It has a plenty of bigger sceneries (like those tree BGs on left/mid/right, which IMHO look too dark and not as good as original ones), but not many smaller sceneries like bushes or lianas, so map feels a bit empty.
Not that it needs to be overloaded with sceneries, but you can even just copy/paste the ones in original nuubia and it should look fine.
As for layout changes - I don't like the tunnel much (it makes blue base much less safe for blue flagger), and those pillars bug me - they're distracting and not really suitable for camping since nuubia's a fast-paced map.