Color of rain drops

[Mrozak]

I would like to try tweaking the color of the rain drops.
I looked through the directories for something related to rain, textures, shapes, shaders, but i didn't find anything.
Can somebody point me to the right direction?

See how blue the rain drops are on the image below?
I don't like that, i want to try to make it less blue, less saturated, maybe even tiny bit more transparent, just to see how that would look.