Maybe that info is in the 69 Service Manual...? I'm mostly a Pontiac guy and this info is in Pontiac service manuals for each year. Here's the info for 69 Firebird if it helps any -
3 & 4 speed manual, 2 speed auto, M38 auto = 1 blue stripe
3 speed HD manual = 1 white stripe, 1 green stripe
M40 auto (turbo 400) = 1 red stripe, 1 pink stripe