From our friends at ProtoPasta (by the way, this is a gorgeous colored filament):
Featured in December 2022's Endless PLA, Fleck ‘n Forest Green (FNF) is in the same style as Fleck ‘n Fire Red (FFR). The big, gold glitter flecks bring warmth and texture to this glorious green. Compared to Cloverleaf Green, Fleck ‘n Forest has much larger flecks and is more translucent. They are similarly warm greens with gold undertones, but Cloverleaf has a more subtle metallic finish with less texture and translucence. Contrast with Fleck ‘n Fire Red or compliment with one or more of our many golds, silvers, or whites.
What is HTPLA and how does it work?