Yellow MH bulbs

[Tigger]

I bought some Ushio bulbs from JL and I noticed that the 10,000K bulbs appear to be more yellow (less blue) than the previous ones I bought. Has anybody else noticed this? Is this the new color of the 10,000K bulbs, or is there something wrong with the ones I have. The new bulbs do not have the silver base like the old ones did.

Somebody told me that it takes about 100 hours to burn in, but I have now been running them for longer than that, and they are still yellowy.