Right-click on Desktop -> Personalize Colors -> scroll down to 'Choose your accent color' click a nice colour from the 'windows 'colors' tile. Scroll d

Right-click on Desktop -> Personalize Colors -> scroll down to 'Choose your accent color' click a nice colour from the 'windows 'colors' tile. Scroll down to: 'show accent color on the following surfaces' click tickbox 'Title bars and window borders' The homogeneous madness then starts to dissipate a bit...