I'm still trying to wrap my head around the inside/outside problem, so until I have a fix my OGR will exist only in hypothesis. Everything else I need for the OGR is existent, however, so here are the last of the requirements, minus trhe obvious final painting.
My visual concept for the scene is the juxtaposition of a cold, military imprisonment with the resilience of the human spirit. The environment is bleak and hopeless, but still happy. The cell is well lived-in and filled with life and colour, attempting to emulate the outside world, and though the walls themselves are hard, stern concrete the atmosphere is one of a home.
The room is bright and well-lit, not just to show off the Soldier's impressive hoard but also to make it welcoming. The installed lights are cool and sterile, but the Soldier's own lights are warm to further separate him from the military existence. The Soldier's collection will be of various colours, but the overall colour scheme will be towards the red end of the spectrum to further warm up the scene and to contrast with the lifeless walls.
The scene must look busy; there must be no flat surface uncluttered, but similarly it must not look messy. It is the home of a slightly eccentric prisoner, not a dumping-ground. The disorder must look endearing, not off-putting. To get this effect I will reference so-called 'Bohemian' interiors (that is, the slightly rustic cosmopolitan chic Bohemian, not the actually-from-that-bit-of-the-Czech-Republic Bohemian) to create as much disconnect as possible between the room and its contents.