Yellowish Tint on Griswold Hinged Skillet

[MarilynM]

I picked up this 1102 bottom part of a Griswold Hinged Skillet at an estate sale. It was covered in a buildup of gunk from many years of use. I cleaned it in a lye tank and started the seasoning process in the oven but now I’m noticing a yellowish tint on parts of the skillet on the inside side walls. Can someone tell me what this is and how to clean it off?
Thanks

 

[Doug D.]

Is the texture of the iron also different in those spots? It may simply be erosion of the polished surface has caused the new seasoning to look different colors.

 

[MarilynM]

The spotted area may feel a slight smoother but the difference is minor. The spots were there before I started to season. Should I put it back in the lye tub and let it soak awhile longer? Just not sure what would caused this? The pan had a substantial thick build up of years of cooking when I got it. Could it have been a certain type of cooking oil someone used?

 

[Doug D.]

Note how the upper, different color area still has the distinct polish grinding marks the lower area doesn't. I don't see any cause to start over.

 

[MarilynM]

Thank you for this information