diff --git a/colorm_test.go b/colorm_test.go
index 70c69142c..c9eb54f51 100644
--- a/colorm_test.go
+++ b/colorm_test.go
@@ -131,7 +131,8 @@ func TestColorMMonochrome(t *testing.T) {
 		{0.2990, 0.5870, 0.1140, 0, 0},
 		{0, 0, 0, 1, 0},
 	}
-	m := Monochrome()
+	m := ColorM{}
+	m.ChangeHSV(0, 0, 1)
 	for i := 0; i < 4; i++ {
 		for j := 0; j < 5; j++ {
 			got := m.Element(i, j)
diff --git a/examples/blocks/blocks/gamescene.go b/examples/blocks/blocks/gamescene.go
index a22661c0b..a79d3a197 100644
--- a/examples/blocks/blocks/gamescene.go
+++ b/examples/blocks/blocks/gamescene.go
@@ -165,7 +165,8 @@ func (s *GameScene) drawBackground(r *ebiten.Image) {
 	op.GeoM.Translate(ScreenWidth/2, ScreenHeight/2)
 
 	a := 0.7
-	m := ebiten.Monochrome()
+	m := ebiten.ColorM{}
+	m.ChangeHSV(0, 0, 1)
 	m.Scale(a, a, a, a)
 	op.ColorM.Scale(1-a, 1-a, 1-a, 1-a)
 	op.ColorM.Add(m)