But, sadly, the answer is no. Raven does not explain why Kyle has a blue saber vs. the ones he uses in JK1 and MotS.
The best explaination that the forum has had was that Kyle lost/threw away his yellow saber when he went to the Dark Side in MotS, and then threw away the red saber after that. In between MotS and JK2 Kyle went to the Jedi Academy for a while before turning his back on the Force. It's assumed that he constructed a new BLUE saber while at the Jedi Academy.
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