Greenish or yellowish like antifreeze? maybe not antifreeze! my friend helped me once, by topping me off with power steering this was years ago, and he did tell me that he topped mine off while topping his off he failed to mention "with what" everything inside my system that was made of rubber, that got it on it, kinda swelled up and looked as if it had turned inside out. total system failure was soon to happen, as my front (closest to master) wheel cylinders started swelling ! we were able to flush the lines out. new master cylinder, and 4 wheel cylinder kits.
if whatever was in yours was water based, it definitely would mess you up as far as braking. ever notice when bleeding brakes, the brake juice will just wash off your concrete. it's water soluble, i really think that if you thoroughly flush the master cylinder and lines they will be ok. i would definitely remove brake calipers, and slosh them around with brake fluid and blow them out with air.
Here is a guide
Sunday, March 6th, 2011 AT 3:36 PM