I have the Rio Grande versions of the base game (with the river included), Inns and Cathedrals and Traders and Builders. Even though they are all from Rio Grande the expansion tiles are much brighter than the tiles from the base game. The texture is different as well which means that even though I use the cloth bag it's still possible to feel the difference.
Same here. The expansion tiles are VERY different in color, we noticed this today and it's kind of annoying. Does anyone know if Rio Grande has replacements that are the right color?