SPECTRA
On each turn, continually draw and roll two dice to add to your resource row. The goal is to form numbered pairs in the row and “bank” one of the paired dice which is scored at the end of your turn. After each roll, decide whether to stop and score banked dice or continue rolling. Beware, if you push your luck too far and form a three of a kind you bust and score nothing! Once you decide to stop rolling, record each banked die’s value in a box, matching its color, on your score sheet. Play until someone has recorded at least one value for all six colors. Then finish the round. Whoever has the highest total score at the end of that round is the winner!
I added one clarification to version 1.1 of the rules because although I had been playing it this way with the FLGS, it wasn't clear from the rules. "You can change which of the two is “marked” any time before scoring."
This is for the scenario such as: you roll a blue 3 and red 3 and "mark" the red 3. But later in your turn you roll two 6s, one of them also red. You now can "mark" the red 6 and then change the 3s by sliding the red 3 back down and the blue 3 up so the red 6 and blue 3 are marked.
Also, I officially added the "combust" variant that we have recently been playing with at my FLGS. If you bust from rolling doubles, instantly erase one recorded score (of any color) from an opponent’s score card.