Legtayor

Tad bit late but yes, Kre-O is compatible with Lego. Most of the colors are the same too, such as dark blue and red. The colors I've noticed that aren't the same are white, yellow, and silver. As far as pigment consistency goes it's the same as Lego as well, so the only way you'll be able to tell the difference is the lack of stud embossing or seeing parts Lego doesn't make :P

When I buy clone brands I tend not to buy the little $2-$5 sets as no effort is put into them. If I'm going to review or test out a company I'l go for a $10-$20 set. Nice review however.