You might find this useful, Garrett:
http://www.frogforum.net/food-feeder...eparation.html
The eggs will turn either a pale blue/gray color or else a brownish color... If my memory serves me correctly, the color that the egg changes determines whether or not it will need an overwintering period or whether they hatch quickly without one. I'm honestly not sure if there are certain environmental conditions required to stimulate one color form over the other... its been many years since I've bred silkworms.
You can place the eggs that require an overwintering period in the butter drawer of a refrigerator for a few weeks (roughly 4-6) then bring them to room temperature/silkworm ideal temperature and that will stimulate them to begin hatching shortly thereafter.
Eggs are a great way to go - much cheaper than live larvae in bulk and less fragile during shipment. You can also consider shooting your questions off to a wholesaler or breeder who regularly works with the eggs. I exchanged some emails with a lady from China when I was ordering bulk quantities of silkworms many years ago, but the company's online page no longer exists (and the name eludes me). Either way, she was happy to help with my questions, being a customer ; )