Rohynol is now manufactured by Roche in 1mg, dark green, 'rounded oblong' type tablets with a blue dyed poweder inside.
Roche have taken the 2mg tabs off the market for general prescription use. These are now only made in quantities for hospital use only.
Personally, I have found R to be one of the nicest benzos - although like alcohol, it can precipitate violence in those prone to such behaviour.
I normally take about 3-4mg with a few beers, very relaxing - more so than Valium. Any more than this tends to impair the memory.