Don't worry, light green simply means the eggs are fertilized. So the green wouldn't cause me to worry.
Sort of like this:
What *would* cause me to worry, is that every time I had a shrimp carrying eggs, she died. However, I suspect this was almost entirely because I kept my shrimps in packs, usually around 7 or so, and the pregnant shrimp was more vulnerable than the others.
You have a few weeks to bone up if you want to take this challenge on.
If not, leave her be, if she's in an older tank with lots of plants a couple of them may even survive off the microorganisms that live there, and hide amidst the plants.
Ghost shrimps (the common one, anyways), look like mini-shrimps when they're just born, they're just upside down. If I were you, and I wanted to attempt breeding 'em, I'd hit http/www.petshrimp.net and check out their articles and forum for some specialized information.
Either way, egg carrying shrimps are fascinating to watch. They're a little more shy, a little more aggressive, and definately more striking. My last pregnant ghost shrimp was so full of eggs she could barely keep them contained. Towards the end, they often shuffle the eggs around in the abdomen so as to keep water flow going alright, and it's like these little gates in their belly just flutter and the eggs bounce gently.
Aaah, now I miss having shrimps. I always thought they were so fun.