Question: Are these darker liquids? I've had issues with the darker liquids gumming up the works. (Not that I mind recoiling my Reo's RM2)
All of their liquids are fairly clear... the darkest I've had was more of an amber color.
And let's not forget about the Shamrock...

It reminds me of an Irish Cream with a hint of mint.
I need to correct myself here, since I just went back and had some of the other Halo juices I have...
The coffee flavors seem to be a little darker than some of the others, Cafe Mocha and Shamrock are the darkest ones I have, but I have never had a problem with them clogging anything...

(funny that the Twisted Java is almost clear, tho)
Well, Since the contest IS over. I decided to order a little something from Halo.
Cafe Mocha
Twisted Java
Shamrock
Looking forward to it.
3 of my fave flavors...
after the Belgian Cocoa, of course!!

(and they all go really well together, too)
I had some of the Turkish Tobacco in a tank, and I topped it off with Cafe Mocha. After that, I added some Twisted Java... and right now I have Shamrock in there, too... all in all, a very nice combination!!