not so sure that is not a UK model, - I think by 1990 they were grey, - my then girlfriend had a Eldridge in 1990 and that was bumpy light grey with flou red. New bikes launched September of the preceding year,- a 1991 bike would be launched September 1990.
Actually I don't think the Bear Valley was imported into the UK until later, - and then it was a very dark matt black with gloss black forks and stem when it first came into the UK.
The BV was below Pine Mountain and Eldridge
I think the series went bottom to top:
Palisades (could be below the Muirwoods, memory fade)
The Bolinas Ridge was introduced later as the entry level, - it never sold well in Latin American/Spanish markets as Bolinas means small b4lls!!
Sizing was 15", 17 1/2", 19" - and a small volume of 14" and 20.5" I think. They measured center of BB to center of TT.
1991 – Sept 1994
Manager, Motosport, Smithbrook Kilns, Cranleigh, England we sold Specialized, Marin, Kona, Cannondale, Trek, Klein, Fat Chance, Bontrager, Dave Yates, Orange, Pace. Bikes I owned: DB Accent, Cannondale M300, Specialized M2 x 2, Klein Pinnacle (awful), Kona Explosif, Fat Chance Yo Eddy, Specialized S-works steel (still got).