In all seriousness, just to help me follow the discussion...
Would you consider a brittle or bright tone whiteish?
A warm smooth tone orangish?
A low mids focused tone brownish?
A mids focused tone greenish?
And a deep strong bass tone blackish?
So maybe a soft greenish tone would be a fairly neutral sounding pickup with a bit of mid focus?
As odd as it may sound, using colors to describe tone is actually more accurate than many people would assume. Place a color wheel (like the 32 or 64 bit type you have on your computer excel or word pull down menu) and play various types of music or specific instruments. You'd be surprised how many people will associate the same general location on that color wheel with specific tones.
Sounds just have colors and textures. I would also say the sound from an Alumitone is not particularly shiny. Brittle, bright tones sound more pale, hard blue. Whitish, yes, but toward blue like fluorescent light. That's not bad, it just is. A thicker, richer bright tone, like a trumpet, heads over toward yellow or even yellow-orange. It can be shiny or less shiny, depending on the trumpet player and mouthpiece. My son goes from an amber, matte sound to a bright yellow, shiny sound on his trumpet. Mid-focus is probably more on the brown to yellow side. Bass tends toward red, purple, and especially maroon. Depending. An upright is more maroon, while a Thunderbird gets more purple or over toward green, depending on eq, strings and attack. It can be a shiny sound, too. Or matte, depending on attack. Precisions are redder than a Jazz, which generally are greener.
Which brings us back to the Alumitones. They are clean, clear sounding pickups without a whole lot of power, although they are extremely sensitive to height. Get them up near the strings and they produce more signal and the signal is more scooped toward green or even aqua. Lower them and they are still green, just softer.
Confused yet? You probably don't want to try to get into my skull too far. It's a really odd place to live, full of blind alleys and trap doors. I always assume that whatever I think offhand about anything will be very different from how most of the rest of the world sees things, and that's usually a reasonably accurate assumption.