Brownish-yellow ghosting lines

[Jerry Simon]

Not black *ghosting* lines as I've always seen - say, from candle-burners - but light brownish-yellow-in-color lines.

Thoughts or explanation re: atypical line color?

[Bill Kibbel]

Sounds like what I've seen from heavy tobacco use.

[Jerry Simon]

2 hours ago, Bill Kibbel said:

Sounds like what I've seen from heavy tobacco use.

Yeah, same color, though a bit lighter, as the heavy nicotine stains you see running down from sweating window sills in a smoker's room.

Thanks, Kibbel.