I think it's prettier with colored icons (see the screenshot). If you prefer this version, simply replace the icons from the previous archive by the icons provided by the attached archive (the picture in the png/ directory). The directory svg/ in the attached archive provides the icons in svg format, as provided by Adwaita but the modification to set up the colors. The filenames in the svg/ directoy are unchanged from Adwaita theme.
Attachment:
colored_icons.tar.xz
Description: application/xz
Attachment:
screenshop_top.png
Description: PNG image
Attachment:
screenshop_bottom.png
Description: PNG image
Attachment:
signature.asc
Description: OpenPGP digital signature