change window background to blue

main.go

@@ -4,6 +4,7 @@ package main
 import (
 	"github.com/faiface/pixel"
 	"github.com/faiface/pixel/pixelgl"
+	"golang.org/x/image/colornames"
 	//"github.com/go-gl/glfw/v3.2/glfw"
 )
 
@@ -11,6 +12,7 @@ func run() {
 	cfg := pixelgl.WindowConfig{
 		Title:  "Pixel Rocks!",
 		Bounds: pixel.R(0, 0, 1024, 768),
+		VSync:  true,
 	}
 
 	win, err := pixelgl.NewWindow(cfg)
@@ -18,6 +20,8 @@ func run() {
 		panic(err)
 	}
 
+	win.Clear(colornames.Skyblue)
+
 	for !win.Closed() {
 		win.Update()
 	}