I've seen those rubber inserts on ebay and Amazon but if I remember correctly only blue and red were available.
Turbonium,that's the nicest and cleanest and almost OEM looking vinyl job i've seen in a long time. I'm not too much into interior "bling" but your's is making my consider doing mine.
'12 Focus Red Candy SE Sport 5 spd
'99 Toyota 4Runner Sport
'11 Subaru WRX STI Hatch