After Adding WatchKit Target it's Files Turns Red

Question

I started a new project in xCode 6.3 then I Selected File > New > Target > AppleWatch and after the confirmation dialogue I got this:
Why is this happening?

UPDATE:
When I clicked on the project it gave me this message:

Answer 1

I solve it by first select your WatchKit Extension folder, in file inspector, click the folder icon in bottom right, then select the right folder in popped window.

Finally do the same thing to WatchKit App folder:)