I'm not sure totally about the colours (I never memorise the colour of them in the past). Basically for correspondances from Schengen 2G to non-Schengen 2E, you now follow a different sign at 2G ("Correspondances 2E K, L, M") and go through contrôles passeports before leaving 2G. This was the way it was before Covid.

After that, there will be a navette for départs hall K, and a different navette for départs hall L + M.

The prior correspondances to 2F remain unchanged.

The area for the correspondances at 2G was renovated with plenty of PARAFE gates. Will report whether the reverse (2E = 2G) is equally efficient upon my return.