Just scooped this one off e-Bay for about $15. It's the first time I've seen a glitter/lava lamp wish a shade, other than the extremely rare Crestworth version. I'm going to convert it to lava. I'll post some pictures of the finished product when I'm done.
I saw that, and was going to forward the link to you. That is one cool lamp - what colors for inside? If you leave the multicolor paint under the bottle, I vote for white/clear. If you don't, I vote for red/blue (Lava brand) since it's a great color idea, tends to be too dark, but this not-too-thick globe would make it less murky. Just add a clip-on lampshade and you're set! Unless this has a threaded ring collar for a ring-holder shade...
In a word: WOW. The perfect colors - they really pop! Now that I see it, I can't imagine more fitting colors, and the relative narrowness of the sides makes the white lava look WHITE in a sea of neon pink liquid. I actually like that shade with it, too. Only thing better might be a completely rectangular one.