All patterns are transparent so a underlaying colored layer will be still visible. The patterns come in black but you can invert the color or colorize the layer with the pattern to change that ^.^ The patterns come together in a zip folder, so unpack the files, then install them here: C\Programms\Gimp2.0\share\gimp\2.0\pattern The files r .pat files Have fun and show me what u made with them! n__n
You don't need to purchase these, just click on the download button (beneath the 'Browse more like this' box) on the right side, unpack the zip file, place the patterns in the GIMP pattern folder as described in the comment and restart GIMP