diff --git a/_docs/public/hue.gif b/_docs/public/hue.gif
index c10ce3584..a0a754b74 100644
Binary files a/_docs/public/hue.gif and b/_docs/public/hue.gif differ
diff --git a/_docs/public/index.html b/_docs/public/index.html
index d93f7941a..357ae2e77 100644
--- a/_docs/public/index.html
+++ b/_docs/public/index.html
@@ -244,7 +244,7 @@ func update(screen *ebiten.Image) error {
 	count++
 	w, h := gophersImage.Size()
 	geo := ebiten.TranslateGeo(-float64(w)/2, -float64(h)/2)
-	geo.Concat(ebiten.RotateGeo(float64(count%720) * 2 * math.Pi / 720))
+	geo.Concat(ebiten.RotateGeo(float64(count%360) * 2 * math.Pi / 360))
 	geo.Concat(ebiten.TranslateGeo(screenWidth/2, screenHeight/2))
 	if err := screen.DrawImage(gophersImage, &ebiten.DrawImageOptions{
 		GeoM: geo,
diff --git a/_docs/public/rotate.gif b/_docs/public/rotate.gif
index 5ef3c3754..5372dcdba 100644
Binary files a/_docs/public/rotate.gif and b/_docs/public/rotate.gif differ
diff --git a/ebitenutil/gif.go b/ebitenutil/gif.go
index b8623578c..d8f0f08e7 100644
--- a/ebitenutil/gif.go
+++ b/ebitenutil/gif.go
@@ -35,15 +35,18 @@ type recorder struct {
 	wg           sync.WaitGroup
 }
 
-var cheapPalette = color.Palette{
-	color.RGBA{0x00, 0x00, 0x00, 0xff},
-	color.RGBA{0xff, 0x00, 0x00, 0xff},
-	color.RGBA{0x00, 0xff, 0x00, 0xff},
-	color.RGBA{0x00, 0x00, 0xff, 0xff},
-	color.RGBA{0xff, 0xff, 0x00, 0xff},
-	color.RGBA{0xff, 0x00, 0xff, 0xff},
-	color.RGBA{0x00, 0xff, 0xff, 0xff},
-	color.RGBA{0xff, 0xff, 0xff, 0xff},
+var cheapPalette color.Palette
+
+func init() {
+	cs := []color.Color{}
+	for _, r := range []uint8{0x00, 0x80, 0xff} {
+		for _, g := range []uint8{0x00, 0x80, 0xff} {
+			for _, b := range []uint8{0x00, 0x80, 0xff} {
+				cs = append(cs, color.RGBA{r, g, b, 0xff})
+			}
+		}
+	}
+	cheapPalette = color.Palette(cs)
 }
 
 func (r *recorder) delay() int {
diff --git a/example/rotate/main.go b/example/rotate/main.go
index 73db50e71..022e5e8cf 100644
--- a/example/rotate/main.go
+++ b/example/rotate/main.go
@@ -36,7 +36,7 @@ func update(screen *ebiten.Image) error {
 	count++
 	w, h := gophersImage.Size()
 	geo := ebiten.TranslateGeo(-float64(w)/2, -float64(h)/2)
-	geo.Concat(ebiten.RotateGeo(float64(count%720) * 2 * math.Pi / 720))
+	geo.Concat(ebiten.RotateGeo(float64(count%360) * 2 * math.Pi / 360))
 	geo.Concat(ebiten.TranslateGeo(screenWidth/2, screenHeight/2))
 	if err := screen.DrawImage(gophersImage, &ebiten.DrawImageOptions{
 		GeoM: geo,