⌘ + [ to create a Keyframe
⌘ + ] to create a Static Keyframe
⌥ + ] to delete a Keyframe
⌘ + ← move selected keyframe left
⌘ + → move selected keyframes right
All of these shortcuts are available under the 'Mark' menu while in the Color Panel. But then again this post is about saving time by not mousing through menus :P
I promise you adding keyframes by mouse is a pain in the ass in comparison