nah youre still 'ethnic' so that is why your coloring is not of a white person's, despite being light skinned. its normal for non-white people to have hyperpigmentation in certain areas of their body.
also my opinion is that i dont think it matters, but i dont really know anything about that stuff. ive never heard of a girl irl or online complain about that. the only times ive seen it be talked about is positively, but i dont think there are any negatives. only guys really care about the color of their partners pubic area, and have a 'bad' and 'good' color defined in their heads. so you probably think it matters because other guys care. thats one of those differences that just one gender cares about, but the other doesnt.
and i dont mean to be rude but the way youre describing yourself, i think its more likely that a girl would care about your size than your color.
and um theres probably methods to change color or something, if you really care that much. i know pornstars get their anus' bleached for example