User blog comment:Mckrongs/July 14 2010 - New Famitsu MHP3 Scans!/@comment-1685631-20100716193522

In Tri, a LS had 3 consecutive levels of power, each time you completed a spirit combo, the level would go up. The three levels went like this: White after your first combo, then yellow, then red. Red is very strong, but white and yellow stay after you have been KO'ed. Red goes away. But you had to complete the full combo, including the special wide slash at the end. Your sword would glow with the corresponding color of your level. That's why there are different colors.