I don’t think it is blue because it is overly bright, it’s blue because the led is getting too hot, did you unscrew the bezel and the reflector and check to see if the mcpcb is tightly screwed down to the copper heatsink area?
Sometimes there are little rough edges on the mcpcb that prevent the base from having good contact with the shelf underneath. You definitely have an overheating led, as said above don’t keep running it like that or it’ll turn even more blue, then die completely.
If it isn’t a problem between the mcpcb and the heatsink shelf below it, it’s that the led isn’t thermally connected to the mcpcb itself. This would require reflowing the led to the mcpcb.
You’d have to desolder the leads from the mcpcb and remove it, then look at it sideways. If the led is tilted or up higher than it should be there may be very little heat transfer between it and the mcpcb. There are many threads about different ways to reflow, but being that it’s a manufacturer defect you have the option of PM’ing Neal or going through the website to see how it could be rectified.
Good luck, let us know what ends up happening.