[sdiy] Roland BA662 color code meaning?

[Amos]

Hi list,

I have an assortment of BA662A here, and my reading tells me that they were
tested and binned according to "gm" range, with matching color indicating
similar "gm" :

http://yusynth.net/gear/ROLAND/R100-schematics/M-140-sch.pdf

However, I've found no indication as to what colors correspond to what
range.
I have parts marked in blue, red, yellow, and white, but I have no idea
which colors mean "higher" or which mean "lower" or what the ranges are.
Do these data exist somewhere?

Thanks,

Amos
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