How to Keypress Lighting (gradient)?

In CUE 1 the individual key lighting will gradient to whatever static lighting is present on they key. In CUE 2, you have to set what the colour the gradient will end in. Is there a way to set the gradient to do the same without creating individual gradient keypresses for different static colours?

e.g. if the numpad keys are blue and the letter keys are red and I set the individual keypress lighting to yellow. When I press a letter key, the key will gradient from yellow to red and when i press numpad key, the key will gradient from yellow to blue.

I hope that made sense. I ask this as i use 5 different static colours on my keyboard but i want the individual key press lighting to be always be the same but gradient back to the which ever static colour it was.

Try this?:

http://i.imgur.com/8elxDck.png