We really like these lamps.  They are a good size and weight for the livingroom. The circumference at the widest/roundest part of the base is 24 inches. The colors definitely adapt to surrroundings and light.  The grey can appear blue and the upper section can appear dark grey, black, or brown.  We purchased type A 3 way LED bulbs. (The table in the photo is Eastview round end table also sold through Wayfair. )