Alcohol will take the color and finish out of the leather, I like the lighter fluid idea but here's what a search turned up:

Method 2 Hairspray Method

Get a can of hairspray, and spray a small amount directly on the stained area.
Leave the hairspray on the stain for about 5 minutes.
Use a soft, dry cloth to gently wipe the hairspray from the leather. ...
Dampen another piece of cloth. ...
Apply leather conditioner to the area using a soft cloth.

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Back to back World War Champs.