Thanks for agreeing with me Matt, your knowledge is far greater than mine when it comes to bottles so it's nice to have someone like you in agreement with me. Now when it comes to Plumbing and Reciting the Alphabet Backwards I think I can take ya'....[8D]ORIGINAL: AntiqueMeds
Looks like a selenium glass coloring. Is it a later machine made bottle.
The selenium bleached bottles can turn that color if exposed to UV.