It's true that they do offer a kit now. But the springs they sell with it are not the same as the ones they used to sell back when they designed the shocks. I bought mine in 1995 and went through the whole thing back then. So basically what I understand is that they made the shock for OE applications, then after people complained that the shocks sucked with any aftermarket lowering spring they mated them to, Tokico apparently decided that they needed to design a spring that would work with their shocks. Hence the kit they sell now.
Anyway, the blue's were originally intended for a lowered vehicle (so I was told back then) and based on my experience I would say yes because I have one car with the Illuminas and Eibachs, which I don't like, and one car with Eibach's and the blues, which I do like.
I'm not sure what Koni had in mind when they made their shocks, but everyone who has them seems to like them on a lowered car. I know I do.