I didn't think that my Gen 3 Showa rear shock was rebuildable, so I bought the full Hyperpro remote reservoir GP shock. I suspected that the Showa was pretty toasted at 20K miles, so it wasn't that big a stretch to go with a known-good new unit. Plus, the custom vavling and custom +10mm length enhanced my handling.
Like Wingspan, I did linear rate front springs at the same time (the 1.0kg springs were way backordered and I was impatient, so I went with .95kg units).
I actually don't mind the Hyperpro spring color. As mentioned, it is so deeply enshrouded that you really have to look for it.
But, the ride quality is great. It totally transformed my porky and wallowing 1993 VFR.
Glad no one got hurt in the spring swap. Had I seen this two years ago, I might have tried it.