Shiny? The color toned matching paint saddle bags on the newer RT, and K-GT, are specific to those bikes, and are usually on the showroom floor with them. The R1150R uses the black generic bags. The bags come in 2 lid flavors, full lids, and the less wider "city lids".
This is a 2007 RT, with painted bags, stock.
A 2004 RT with generic bags
Notice the much lower location of the exhaust on the RT, vs. the R1150R. The higher exhaust on the R1150R makes for a smaller bag on exhaust side. Some R1150R owners remove the exhaust can and install the RT generic bags, with the same sized bag on both sides. A stock R1150R exhaust will not support a RT bag on the exhaust side.
Any wider bag and it's usually due to oversized lids.
These black generic bags were universal on most BMW's, except the K GT's, which were the fist bikes with color matched bags.
2004 K1200Gt, with matching bags.