diff --git a/examples/main.go b/examples/main.go
index 2a55f21..2625fa4 100644
--- a/examples/main.go
+++ b/examples/main.go
@@ -125,8 +125,20 @@ func screen() {
 	// gets the pixel color at 100, 200.
 	color := robotgo.GetPixelColor(100, 200)
 	fmt.Println("color----", color, "-----------------")
+
 	clo := robotgo.GetPxColor(100, 200)
 	fmt.Println("color...", clo)
+	clostr := robotgo.PadHex(clo)
+	fmt.Println("color...", clostr)
+
+	rgb := robotgo.RgbToHex(255, 100, 200)
+	rgbstr := robotgo.PadHex(robotgo.U32ToHex(rgb))
+	fmt.Println("rgb...", rgbstr)
+
+	hex := robotgo.HexToRgb(uint32(rgb))
+	fmt.Println("hex...", hex)
+	hexh := robotgo.PadHex(robotgo.U8ToHex(hex))
+	fmt.Println("HexToRgb...", hexh)
 
 	// gets the pixel color at 10, 20.
 	color2 := robotgo.GetPixelColor(10, 20)
diff --git a/examples/screen/main.go b/examples/screen/main.go
index 83806ee..20af2ab 100644
--- a/examples/screen/main.go
+++ b/examples/screen/main.go
@@ -38,8 +38,20 @@ func main() {
 	// gets the pixel color at 100, 200.
 	color := robotgo.GetPixelColor(100, 200)
 	fmt.Println("color----", color, "-----------------")
+
 	clo := robotgo.GetPxColor(100, 200)
 	fmt.Println("color...", clo)
+	clostr := robotgo.PadHex(clo)
+	fmt.Println("color...", clostr)
+
+	rgb := robotgo.RgbToHex(255, 100, 200)
+	rgbstr := robotgo.PadHex(robotgo.U32ToHex(rgb))
+	fmt.Println("rgb...", rgbstr)
+
+	hex := robotgo.HexToRgb(uint32(rgb))
+	fmt.Println("hex...", hex)
+	hexh := robotgo.PadHex(robotgo.U8ToHex(hex))
+	fmt.Println("HexToRgb...", hexh)
 
 	// gets the pixel color at 10, 20.
 	color2 := robotgo.GetPixelColor(10, 20)
diff --git a/screen/goScreen.h b/screen/goScreen.h
index 2078aa1..0e1813e 100644
--- a/screen/goScreen.h
+++ b/screen/goScreen.h
@@ -34,7 +34,7 @@ char* pad_hex(MMRGBHex color){
 
 static uint8_t rgb[3];
 
-uint8_t *color_hex_to_rgb(uint32_t h){
+uint8_t* color_hex_to_rgb(uint32_t h){
 	rgb[0] = RED_FROM_HEX(h);
 	rgb[1] = GREEN_FROM_HEX(h);
 	rgb[2] = BLUE_FROM_HEX(h);