When I made mine out of the poured sugar, I greased an ice cube tray with crisco, and poured them into it. They popped right out... I cooked it 50% power for 6 minutes, and 100% power for 1 minute, 30 seconds. They did have a SLIGHT yellowish tint that I didn't like very much...
To make it look better though once they were in the top of my barrel, I used the hot sugar to glue them into place randomly, kinda standing up.
Then, I made a batch of the poured sugar but didn't cook it as long, I guess that is soft crack stage?...it was very clear, and I just poured it onto a cookie sheet lined with aluminum foil that i had also greased with crisco. When the sugar hardened on the foil, it was still SORTA bendy, but I could still crack it into pieces. After cracking it into the smaller pieces, I put it in a big zip loc and beat the @#$%#$! out of it with a hammer, and got a crushed ice look.
When I covered the cubes with the crushed ice, the cubes looked more clear and it looked just like the real deal.