Being instructed to "follow the greens" the assumptions are:
1. ATC has selected a safe route without informing you which route it is.
2. The taxiway lighting is designed to avoid conflict with other taxiway routes and runway.
3. ATC is aware of any airfield lighting design deficiencies when giving such instructions.
Taking the above into account I like to know which way the "greens" are taking me so prefer to be given the taxi routeing which helps with situational awareness and avoiding any potential conflict with other traffic.