Dear Allin, I'm playing around with Gretl code trying to replace the original icons with the system icons. My aim goal is to try to familiarize myself with the gretl GUI code to eventually contribute more in that field. I'm using elementaryOS (Ubuntu-based distro) that uses ".svg" icons and has, IMHO, a great user interface inside the desktop Linux world. The piece of code I think I need to change is the file "gui/toolbar.c". Am I right? What I'm doing right now is copying the system ".svg" icons, converting to ".xpm" and saving/replacing the originals with the new ones inside the "pixmaps" folder. Is that the right thing to do? More, could I use the ".svg" icons directly without conversions to ".xpm"? Many thanks in advance, Henrique Andrade