diff --git a/examples/glclock.c b/examples/glclock.c
index c36d9a9..182743f 100644
--- a/examples/glclock.c
+++ b/examples/glclock.c
@@ -18,9 +18,9 @@ void tick(MwWidget handle, void* user, void* call) {
 	time_t t = time(NULL);
 	int    i;
 	double rad;
-	int render = 0;
-	int w = MwGetInteger(opengl, MwNwidth);
-	int h = MwGetInteger(opengl, MwNheight);
+	int    render = 0;
+	int    w      = MwGetInteger(opengl, MwNwidth);
+	int    h      = MwGetInteger(opengl, MwNheight);
 	if(last != t) {
 		char* wday[] = {"Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat"};
 		char* mon[]  = {"Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
@@ -73,25 +73,25 @@ void tick(MwWidget handle, void* user, void* call) {
 	glVertex2f(cos(rad) * 0.5, sin(rad) * 0.5);
 	glEnd();
 
-	if(render && w > 0 && h > 0){
+	if(render && w > 0 && h > 0) {
 		unsigned char* buffer = malloc(w * h * 4);
-		MwLLPixmap px;
-		int j;
+		MwLLPixmap     px;
+		int	       j;
 
 		glReadPixels(0, 0, w, h, GL_RGBA, GL_UNSIGNED_BYTE, buffer);
-		for(i = 0; i < h / 2; i++){
-			for(j = 0; j < w * 4; j++){
+		for(i = 0; i < h / 2; i++) {
+			for(j = 0; j < w * 4; j++) {
 				unsigned char b = buffer[i * w * 4 + j];
 
-				buffer[i * w * 4 + j] = buffer[(h - i - 1) * w * 4 + j];
+				buffer[i * w * 4 + j]		= buffer[(h - i - 1) * w * 4 + j];
 				buffer[(h - i - 1) * w * 4 + j] = b;
 			}
 		}
 
 		px = MwLoadRaw(window, buffer, w, h);
 		MwVaApply(window,
-			MwNiconPixmap, px,
-		NULL);
+			  MwNiconPixmap, px,
+			  NULL);
 		MwLLDestroyPixmap(px);
 
 		free(buffer);
diff --git a/include/Mw/LowLevel.h b/include/Mw/LowLevel.h
index 36be614..0b8252d 100644
--- a/include/Mw/LowLevel.h
+++ b/include/Mw/LowLevel.h
@@ -115,6 +115,8 @@ MWDECL void MwLLMakeBorderless(MwLL handle, int toggle);
 
 MWDECL long MwLLGetTick(void);
 
+MWDECL void MwLLSetBackground(MwLL handle, MwLLColor color);
+
 #ifdef __cplusplus
 }
 #endif
diff --git a/src/backend/gdi.c b/src/backend/gdi.c
index e18f8b5..016da63 100644
--- a/src/backend/gdi.c
+++ b/src/backend/gdi.c
@@ -276,6 +276,11 @@ void MwLLFreeColor(MwLLColor color) {
 	free(color);
 }
 
+void MwLLSetBackground(MwLL handle, MwLLColor color) {
+	(void)handle;
+	(void)color;
+}
+
 void MwLLGetXYWH(MwLL handle, int* x, int* y, unsigned int* w, unsigned int* h) {
 	RECT rc;
 
diff --git a/src/backend/x11.c b/src/backend/x11.c
index fce0a2a..55a3e3a 100644
--- a/src/backend/x11.c
+++ b/src/backend/x11.c
@@ -174,6 +174,10 @@ void MwLLFreeColor(MwLLColor color) {
 	free(color);
 }
 
+void MwLLSetBackground(MwLL handle, MwLLColor color) {
+	XSetWindowBackground(handle->display, handle->window, color->pixel);
+}
+
 int MwLLPending(MwLL handle) {
 	XEvent ev;
 	if(XCheckTypedWindowEvent(handle->display, handle->window, ClientMessage, &ev) || XCheckWindowEvent(handle->display, handle->window, mask, &ev)) {
diff --git a/src/core.c b/src/core.c
index 75dd9a3..024d2d0 100644
--- a/src/core.c
+++ b/src/core.c
@@ -275,6 +275,11 @@ void MwSetText(MwWidget handle, const char* key, const char* value) {
 		shput(handle->text, key, v);
 	}
 	if(handle->prop_event) MwDispatch3(handle, prop_change, key);
+	if(strcmp(key, MwNbackground) == 0) {
+		MwLLColor c = MwParseColor(handle, value);
+		MwLLSetBackground(handle->lowlevel, c);
+		MwLLFreeColor(c);
+	}
 	if(strcmp(key, MwNbackground) == 0 || strcmp(key, MwNforeground) == 0) {
 		MwForceRender(handle);
 	}