What kind of toning is it called where there's a solid colored stripe in the middle of a cent? I had seen one on here I believe.
I guess you would call it a cent with a "solid colored stripe in the middle". It is not a woody if that is what you are asking. I was set on/exposed to something to give it that stripe either purposefully or by accident.
See https://www.cointalk.com/threads/got-wood.65353/ A woody is when the alloy has not been mixed properly and the different compositions tone to different colors.
Thank you Winged Liberty for making this coinboard for me. Unlike WL, I don't have many colorful Lincoln Proofs after 1977. Maybe someday, if he'll leave some for others.
Some Russian clad proofs. Impossible to find with these colors. Luckily I found a 4-coin lot of them. Indirect light, they look like this.