I wont use the terms "colored" or "uncolored" to describe mic pres, since I've never heard a U-87 make noise without one (except the time I dropped one on the hardwood floor). The Neotek, in comparison with any outboard pre (Neve 1272, 31105, API 312, Fearn VT-2), always sounded smaller, weaker, and less three dimensional. The outboard pres were larger and smoother sounding, but still clear and detailed. The closest outboard to the Neotek was an Avalon, which I also don't care for, but the Avalon was still better.
-Chris