So you want me to sell you a bridge pickup that will give more color to your sound? Don't have one, but I can recommend you start your search looking at pups with more output, maybe it's called Henries?, then what you have now. With the increase in output, generally, I've found I get more harmonics and more bass response. Of course, you have to play louder, if that's a consideration. Most manufactures post this information on their websites, so start there ...
Also, you should be looking at your whole signal chain, starting with your speaker. Are you using something like an eminence swamp thing, which to my ear doesn't color the sound at all, which I love because I can process the sound before it hits the speaker, or a eminence canibis rex which sort of smooths the sound.
I like using a clear speaker and tweaking, rather than the other way because you can't tweak what isn't there.
That said, the other night I was playing a stock vox 30 2x12 and it colored the upper mids with a wonderful complexity. It was so nice.