rio-wallpaper.patch

diff -r f7dfc146779d sys/src/cmd/rio/data.c
--- a/sys/src/cmd/rio/data.c	Mon Oct 05 14:10:12 2020 -0700
+++ b/sys/src/cmd/rio/data.c	Fri Oct 16 11:08:05 2020 +0300
@@ -175,8 +175,10 @@
 void
 iconinit(void)
 {
-	background = allocimage(display, Rect(0,0,1,1), RGB24, 1, 0x777777FF);
 
+	background = readimage(display, 0, 0);
+	if (background == nil)
+		background = allocimage(display, Rect(0,0,1,1), RGB24, 1, 0x777777FF);
 	/* greys are multiples of 0x11111100+0xFF, 14* being palest */
 	cols[BACK] = allocimage(display, Rect(0,0,1,1), CMAP8, 1, 0xFFFFFFFF^reverse);
 	cols[BORD] = allocimage(display, Rect(0,0,1,1), CMAP8, 1, 0x999999FF^reverse);