the theme is secret but you may find out what it is about by opening this spoiler
![Very Happy :D](./images/smilies/icon_e_biggrin.gif)
SpoilerShow
![Image](http://i.imgur.com/qXMyt.jpg)
Yes, the walls have very weak normal maps so it fits grimrock a bit better.
- Pillars
Doors
Stairs
Torches
Wall decoration
Props
improve ceiling texture (?)
- Wall (2)
Ceiling
Floor (also, grating)
Pillars (3)
Cave-in + Ceiling
![Wink ;)](./images/smilies/icon_e_wink.gif)
tell me what you think!