I've been disappointed with regular lights I've bought from both Wal-mart and Target.... (Had several bulbs on each strand not fully coated...)
And it wasn't like all of the strands were the off-brand... I bought some Philips lights from Target that were poor quality.
As for those "Almost blue" lights, yes those are White LED's, and that blue tint is (part) of the reason you don't see them used in houses yet to replace Flourecent and incadesent lights (harsh blue color vs soft redish hue that flourecents and incadescents give off).
That and the up front cost, though the savings from the low energy use and the extremely long life of the bulb help off set that and then some in the long run I believe