If it is just staining the plastic and plenty is left on the cooler you should be fine.
yeh its just like a small film on the plastic not very much. the heatsink still has a pretty good amount from the looks of it but one corner kinda smeared... Anyhtign to worry about there?
Whats your temperatures? If they're fine, don't worry
Nothings plugged in. didnt wanna chance it without some advice first.