I just passed by my local hobby shop to check if the Trumpy Udaloy had finally arrived (and hasn�t

), and noticed some plastic containers labeled "Water effect", and in several shades of blue (Pacific blue, etc). They come from Vallejo. The dealer told me they were just in, and he doesn�t have any experience or input about the final result.
also little containers with "Foam effect", and others.
Does anybody know this stuff?. If so, how good is it?. Easy to work with?.
Thanks in advance.
Pachi.