Ric, the 1999/2000 vinyl was not horrible. Mine still looks like new, and my passengers are amazed at the condition and comfort of the vinyl in my 13 year old boat. Of course it has been well cared for.
Unfortunately, I cannot answer the OP's question regarding the original manufacturer of the vinyl. I did look up the Omnova Nautolex, and see similar colors. This company has a set of color samples for $3.75 that you can order:
http://www.decorativefabricsdirect.com/ProductDetails.asp?ProductCode=CP492066+1 on the Gortex thread. I specify that on my boat covers / Biminis also.
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"Knot Easy" 2000 Horizon 240 Volvo 5.7GS /SX
tow: 2017 Honda PILOT EXL-AWD
prev. boats:
'87 Chaparral 198CXL 4.3 OMC Cobra
'69 Jetstar 16ft Ski Boat, 115hp Yamaha
'68 Aluminum Jon Boat, 3hp Sears
'64 Water Wings