hyprland-plugins/borders-plus-plus/README.md

borders-plus-plus

Allows you to add one or two additional borders to your windows.

The borders added are static.

Config:

plugins {
    borders-plus-plus {
        add_borders = 1 # 0 - 2
        col.border_1 = rgb(ffffff) # example col for border 1
        col.border_2 = rgb(2222ff) # example col for border 2
    }
}