for (screen = 0; screen < nscreens; screen++) {
XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[color]);
XClearWindow(dpy, locks[screen]->win);
for (screen = 0; screen < nscreens; screen++) {
XSetWindowBackground(dpy, locks[screen]->win, locks[screen]->colors[color]);
XClearWindow(dpy, locks[screen]->win);