I have always liked the honey blonde stocks, just never got lucky enough to get one. They don't come up very often on the auction sites I frequent. Non-matching or not, if it fits nicely and isn't too beat up, I personally would leave it alone.
I tried refinishing an SKS stock once...that wood can be kind of tricky...the sandpaper seemed to have more of a cheese grating effect than a smoothing effect. The only thing I could liken it to would be trying to sand uncured bamboo....or very cured string cheese.
Is it living on a pinned, short lug or long lugged barrel? If you can find the color you are looking for in a used stock, since it is already mismatched that might be a better route than messing with the original finish. Then you could recoup your expenses by selling the blondie to someone like me.