What is the analogy of to as green a word starting with scr spr str or thr?

The analogy you're looking for is likely "as green as spring. This is a common simile comparing something to the vibrant color of new growth in the spring.

Here's why the other options don't quite fit:

* Scr: Doesn't have a strong association with color.

* Str: Could relate to strength, but not necessarily green.

* Thr: Doesn't have a clear connection to color or a comparable object.