Interesting how the triphosphor newer GE lamp has dark green bands, the lampi has reddish bands (standard halophosphate that just look weird), the older ge from 2003> has yellow bands and I think the feit electric also had triphosphor like bands.

Older GE f8t5/cw
Feit Electric? f8t5/827 (the green lines are hard to see)
Newer GE f8t5/cw
Lampi f8t5/ww 1998>