Smooth skin avocados have more carbs than a pebbled skin avocados!

(I'm sure someone will try to correct me on the smooth/pebble saying it's green/black, but where I live most avocados appear black so the smooth/pebble is the safest indicator.)

From Avocados: the “Perfect” Low Carb Food:

"Most of the avocados sold in the United States come from California or Florida. The California Haas are smaller with a pebbly skin in dark green to purplish-black; the Florida Fuertes are larger and have smooth, bright green skin. The Haas have a rich buttery texture and deep flavor while the Fuertes have less fat and more water for a blander flavor.
It’s important to know which variety you are buying! The Haas avocados have about half the Net Effective Carbs and are higher in iron, folate and vitamin E than the Fuerte variety."