music man necks are sanded so the playing length has a satin feel while the rest is glossy (or oil finished or however they get them like that
). But that's normal.
Why is this neck yellow only below the headstock? That alone would be a āred flagā for me. The yellow begins right at the nut and there is a definite straight line that separates the yellow from natural, like it may have been taped off at some point which may inducate a possible previous headstock repair.
Just guessing but I would be ārunning awayā from this deal.