{
// add all possible colorization names to the list
final TileManager tilemgr = _ctx.getTileManager();
final TreeSet<String> set = Sets.newTreeSet();
StageMisoSceneModel msmodel = StageMisoSceneModel.getSceneModel(_scene.getSceneModel());
msmodel.visitObjects(new ObjectVisitor() {
public void visit (ObjectInfo info) {
int tsid = TileUtil.getTileSetId(info.tileId);
TileSet tset;
try {
tset = tilemgr.getTileSet(tsid);