I must stress the Icons are Suru++ Asprómauros (https://store.kde.org/p/1247483/) by (https://www.opendesktop.org/u/gusreis1989/)
They have been recoloured in oomox to match my Carboniferous-Gold theme.
I also must stress they are only intended for use in Plasma,which is what I use,and have not been tested for Gnome or GTK3,and for some reason the colours are not correct in GTK2 toolbars.
To make them look like Dolphin in the screenshots,right click the folders with emblems (Downloads,Music,Pictures etc.) and select properties,then under the General tab,directly under the word General
is an icon,click that and look in System icons for an icon of a folder just called "folder",select and ok that,then your folders will all match with no emblems for any icon theme you use.