Reverted 165 Large Deco name from Icicle change. Updated color also.

I determined that 165 Large Deco is also used as the stalactites/stalagmites in the caves, so I reverted the name change and changed the color to the cave grey color instead of the ice blue color since that works better for both situations.

It also has a number of frames, I'll delve into that in a later commit.