There is more to it than just colors...

There is red = permanant (think 272 ????)
but ther is also red = high temp and permanent I think 271 (someone please check this if you actually use it)
Blue = removeable
Green = wicking and removable ( flows into the cracks of a bolt that is already installed)
Green= engine sleve retainer ( Probably never going to get it out designed for high temp and permanant)

I know there is a lot more to it than that, but those are what I remember

Always use numbers not colors when buying... I am sure a call to Loc Tite will provide you with more information than is here and will most likely be 100% correct