The Medium and Short Scale sets have an aqua / turquoise silk. Long and Extra Long have Red silk on both ends. However, not to confuse things, the new Steve Harris flats are ground a little smoother and have Red Silk by the balls and Aqua Silk by the tuning posts.
Short Scale / Medium Scale 77's
Long Scale 77's
THANK YOU for the pics! For a long time I thought I was sold duds from a dud-batch, but I'd started to suspect otherwise...
Allow me to explain:
the
short scale 77s (and, I already suspected from the identical gauges, the mediums too) are
unlike the long scalers in more than one respect. For starters, they're verrry smooth as Precision 101 said, not the coarse flatwound feel many posters here regularly describe. Secondly, they sound pretty muffled right out of the package, so not at all bright as people usually say the 34" are (at least in the beginning).
Two years ago I put together a mixed bass VI set out of the five wound strings from the D'Addario 7 string guitar Chromes set, and one bass .090 Rotosound flatwound low E (actually I bought two and got to use both in time). The D'Ads' sound I loved, the Roto's wasn't bad at all but comparatively too dark.
[I've since tried a Pyramid set also made of guitar and bass singles, and the low E, before it broke on me (ok, 14 months of use aren't bad in roundwound terms, but I expected flats to last decades in theory!), had turned dead as a doornail,
way farther gone than the old Roto I've had to put back on to replace it.]
NOW I finally have evidence that the shorters and midders look and (I assume) feel and sound practically like another type of string altogether!
EDIT: I obviously can't comment on the A, D and G strings in either short or medium length, I haven't tried them (as I haven't the long, superlong or SH versions). They might be somewhat less dark than the E, or not.