mirror question

I just replaced the secondary mirror in my Hardin 10" with one of the astrola mirrors that Hardin sells. They said it would be of higher quality than the original mirror. I noticed while looking at the two side by side, that the new astrola mirror had a slighty yellowish tint to the reflected image, while the original mirror had a white reflected image. Is this because of different coatings? Also, the new mirror is clear glass, while the original is frosted looking.