Usually, if anyone is playing a StingRay, it's because they WANT that typical StingRay tone. I don't like it all so I don't own a Ray but, having said that, it's entirely possible to just use your Ray in such a fashion that it emulates passive tones pretty well. I didn't quite think that was possible until I saw this:
http://www.talkbass.com/forum/f8/ed-friedland-classic-stingray-review-769139/
StingRays are SUPER versatile. Use foam mutes, use fingerstyle, roll off the high end, boost the lows and low mids, string it with flats... it's surprisingly warm and thumpy and you may not need to swap out electronics or do anything complicated at all.
Almost all basses are more versatile stock than they're given credit for. It's crazy how people want new electronics or a whole new instrument just to get one new sound.