I played the Terra for the last couple of days making encased discs. I used original Terra, T25 and T265. The original Terra are the light blue, the T25 is the dark violet/purple (my fav) and the new version T265 is the orange/purple. Really, to me these are like three completely different glasses instead of a variation of one. I'm going to split them up into small sets and I may post better pics showing the difference in color. I couldn't help but post this pic after Wally took it just for the blog...lol!