According to my notes Tornado´s ribbon was white.
All of them came with ribbons just like the normal Ponies.
Thundercloud - deep purple
Tornado - white
Ice Crystal - dark blue
Lightning - green
Fireball - hot orange
Sunburst - yellow / pale blue?
I had pictures but those are currently on another harddrive, not with me.
I know we have at least one expert here who has pictures but I cannot rememer her name.
edit:
I did a little research in the old Arena-forums and I found what I was looking for.
Aerosmith_gal here on the boards collect MB accrssories and this is what I found:
http://www.mlparena.com/Forums/viewtopic/t=209781/highlight=mountain.html