Combine -graph twoway- with -drarea-

Dear all,
I want to display a graph with two lines and their confidence intervals using Local polynomial smooth plots with CIs. I am using the following code:

I would like to use the -drarea- code by Adrian Mander to show overlapping confidence intervalls in another color.

Can anyone help me how to combine these two commands? I already tried some combinations but nothing worked out.

Thanks for your help!