I've read/seen in almost all builds that the pink extruded foam is used and recall that the pink foam is the only one to be used. last night I went to my local menards to pick up 1" foam and they now only stock a yellow one( different brand) that apparently has the same specs/ratings as the pink one (different manufacturers)... so is it ok to use something other than the pink foam... should I return this and get the 1.5" in pink which they have in stock?