if the insulation in my attic starts turning gray is that a problem? is it mold? unhealthy?

Here is a photo of my attic with the gray insulation: can i rubb my butter?
  • If I fill up my deep freezer with something like bags of ice, will it be more efficient? It's mostly empty.
  • Does anyone know how to fix a hot tub leak?
  • Its really hot and my fridge is stinkink from the rear, help!?
  • abatement of mold?
  • is it better to use inexpensive furnace filters versus expensive ones?
  • is it easy to fit an ariel in a loft of a house?
  • To roofing contractors: how much difference is there between a 15lb felt, 30lb felt, and/or water+ice shield?
  • Can I convert two 15 amp outlets to one 30 amp outlet?