opaque containers for WS

A very quick question as I'm staring at a quart and pint size paper ice cream containers. Since they are not see-thru but I coudl use plastic wrap on top and still use them?

alyrics,
I used a few opaque milk jugs last year with some of my seeds and they all sprouted fine. The only thing is I had to monitor them more closely for moisture. I also know of alot of wintersowers that use cool whip containers, margarine containers, ice cream containers every year faithfully and they have great success. They cut a circle out of the cover and before replacing the cover they put plastic wrap over the container. Put the cover on and viola a mini greenhouse. So I say go for it!
Hope this helps..
Michelle

Somebody told me that if you can see your hand through the plastic it will be OK...

I'll let you know in a couple of months since I used opaque plastic bags to cover my containers!

Well I have the most assorted bunch of containers - I crack myself up, this is going to be really ugly out on the deck for a while. I ran the paper ice cream container through the dishwasher and it didn't even faze it - so it ought to be ok for WS. I also have 2.5 gallon clear bottle from some gigundo purchase of olive oil and other assorted things, including a green 2 liter pop bottle - thought I'd save that for some shade-loving plant. I getting revved to plant out my next batch. I figured if I did it all on March 15th I should be in good shape. I keep hopefully looking at the ones I planted on 2-25 but no leaves yet.
Thanks for the quick answers all - what a great bunch of cyber pals!