Luna has better colors, Aero is pale slime colored. Luna has bright green colorful checkbox, Aero has pale slime colored checkbox. Luna has nicely drawn light blue scrollbars, Aero has pale slime colored scrollbars. Luna has colorful warm orange window background, Aero has cold pale slime colored window background. Luna has colorful orange button highlight, Aero has cold slime colored button highlight. Luna has an awesome Power Blade style progress bar, Aero suddenly has a colorful progress bar, but with gimmicky animation of a spinner doing nothing. Luna has colorful gradient window caption, Aero has pale slime colored window caption with gimmicky gloss. Also Aero has too thick window borders.