copy keyframes

Hi, is there any way to to copy/paste keyframes from/into the corrector of the color page? I have seen lots of comments about copying from one node to the other, but i need to jump back and forth from one keyframe value to a second one. up til now i have to enter the same changes for every keyframe, it would be so nice just to copy the keyframe and paste it onto the same track a couple of seconds later again...