Courtesy of Col. Fishguts' Seal of Approval, I present to you the normal mapped GTB Rhea!Download link
; contains three maps.
- edited shinemap that has black alpha channel and thus does not produce environmental reflections for the ship's hull (and makes it looks more like in Fishguts' screenshots, since he apparently doesn't use env mapping
-normal map - quite obviously; the production/distribution version suffers somewhat from the DDS compression artefacts on diagonal lines. I have another, uncompressed version of the normal map which removes the compression (obviously), but also uses more VRAM resources, so I ended up putting the compressed file up for downloads for now. The difference is mostly visible in the ship lab and at close range, so for the most time it isn't an issue.
-height map - use at your discretion. It doesn't do anything really noteworth and thus is mostly lack of resources - the normal map alone does a fine work, so if you're in any way tight with system resources, leave this out.
As for using the files... open the 7zip-file, pick the appropriate files, and copypaste them to your ..\FreeSpace2\GTB_Rhea\data\maps directory.