I've played with the settings a bit more, and the B <- G may even be unnecessary. The B <- B brings out more detail in things like R2, but less in the Saber. I do think this is a screwed up color correction setting and not a miscolored saber any more. How this got past QC still escapes me.
Okay, here are the screencaps. I said I was too tired, but here they are anyway. Now I'll be able to sleep.