here about the difference I experienced with a new batch of Vetrofond Extra Light Olive and how it wasn't acting the same as the previous batch did. It turns out there is a very good reason for that. They aren't the same color. The labels on the bundles say this, I just hadn't read them properly.
The egg on the right is made with the original ELO. Nice pale olive. The top bead is made with ELO PALE. Ah hah! That would explain it. Apparently the thing that makes it pale does something in my torch chemistry to turn the glass pink and reducing it, which I did deliberately here, gives it a bronzed look. Now I can use these two properly!