One easy way, with GIMP, is through the menu "Colors/Desaturate...".
- [Trisquel-users] Dark / grey wallpaper jbahn
- [Trisquel-users] Re : Dark / grey wallpaper lcerf
- [Trisquel-users] Re : Dark / grey wallpaper pinmaritim
- Re: [Trisquel-users] Dark / grey wallpaper enduzzer
- Re: [Trisquel-users] Dark / grey wallpaper jbahn
- Re: [Trisquel-users] Dark / grey wallpaper pinmaritim
