diff --git a/examples/.gitignore b/examples/.gitignore
new file mode 100644
index 0000000..506eee3
--- /dev/null
+++ b/examples/.gitignore
@@ -0,0 +1,2 @@
+*.png
+*.html
diff --git a/examples/go.mod b/examples/go.mod
new file mode 100644
index 0000000..30b64bf
--- /dev/null
+++ b/examples/go.mod
@@ -0,0 +1,17 @@
+module example
+
+go 1.18
+
+require (
+	github.com/lucasb-eyer/go-colorful v1.2.0
+	github.com/muesli/clusters v0.0.0-20200529215643-2700303c1762
+	github.com/muesli/kmeans v0.3.0
+)
+
+require (
+	github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 // indirect
+	github.com/wcharczuk/go-chart/v2 v2.1.0 // indirect
+	golang.org/x/image v0.0.0-20200927104501-e162460cd6b5 // indirect
+)
+
+replace github.com/muesli/kmeans => ../
diff --git a/examples/go.sum b/examples/go.sum
new file mode 100644
index 0000000..f65619c
--- /dev/null
+++ b/examples/go.sum
@@ -0,0 +1,12 @@
+github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
+github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
+github.com/lucasb-eyer/go-colorful v1.2.0 h1:1nnpGOrhyZZuNyfu1QjKiUICQ74+3FNCN69Aj6K7nkY=
+github.com/lucasb-eyer/go-colorful v1.2.0/go.mod h1:R4dSotOR9KMtayYi1e77YzuveK+i7ruzyGqttikkLy0=
+github.com/muesli/clusters v0.0.0-20180605185049-a07a36e67d36/go.mod h1:mw5KDqUj0eLj/6DUNINLVJNoPTFkEuGMHtJsXLviLkY=
+github.com/muesli/clusters v0.0.0-20200529215643-2700303c1762 h1:p4A2Jx7Lm3NV98VRMKlyWd3nqf8obft8NfXlAUmqd3I=
+github.com/muesli/clusters v0.0.0-20200529215643-2700303c1762/go.mod h1:mw5KDqUj0eLj/6DUNINLVJNoPTFkEuGMHtJsXLviLkY=
+github.com/wcharczuk/go-chart/v2 v2.1.0 h1:tY2slqVQ6bN+yHSnDYwZebLQFkphK4WNrVwnt7CJZ2I=
+github.com/wcharczuk/go-chart/v2 v2.1.0/go.mod h1:yx7MvAVNcP/kN9lKXM/NTce4au4DFN99j6i1OwDclNA=
+golang.org/x/image v0.0.0-20200927104501-e162460cd6b5 h1:QelT11PB4FXiDEXucrfNckHoFxwt8USGY1ajP1ZF5lM=
+golang.org/x/image v0.0.0-20200927104501-e162460cd6b5/go.mod h1:FeLwcggjj3mMvU+oOTbSwawSJRM1uh48EjtB4UJZlP0=
+golang.org/x/text v0.3.0/go.mod h1:NqM8EUOU14njkJ3fqMW+pc6Ldnwhi/IjpwHt7yyuwOQ=
diff --git a/go.mod b/go.mod
index f9793f0..c852891 100644
--- a/go.mod
+++ b/go.mod
@@ -3,7 +3,6 @@ module github.com/muesli/kmeans
 go 1.12
 
 require (
-	github.com/lucasb-eyer/go-colorful v1.0.2
 	github.com/muesli/clusters v0.0.0-20180605185049-a07a36e67d36
 	github.com/wcharczuk/go-chart/v2 v2.1.0
 )
diff --git a/go.sum b/go.sum
index 17269a9..da5679f 100644
--- a/go.sum
+++ b/go.sum
@@ -1,9 +1,5 @@
-github.com/DATA-DOG/go-sqlmock v1.3.3 h1:CWUqKXe0s8A2z6qCgkP4Kru7wC11YoAnoupUKFDnH08=
-github.com/DATA-DOG/go-sqlmock v1.3.3/go.mod h1:f/Ixk793poVmq4qj/V1dPUg2JEAKC73Q5eFN3EC/SaM=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0 h1:DACJavvAHhabrF08vX0COfcOBJRhZ8lUbR+ZWIs0Y5g=
 github.com/golang/freetype v0.0.0-20170609003504-e2365dfdc4a0/go.mod h1:E/TSTwGwJL78qG/PmXZO1EjYhfJinVAhrmmHX6Z8B9k=
-github.com/lucasb-eyer/go-colorful v1.0.2 h1:mCMFu6PgSozg9tDNMMK3g18oJBX7oYGrC09mS6CXfO4=
-github.com/lucasb-eyer/go-colorful v1.0.2/go.mod h1:0MS4r+7BZKSJ5mw4/S5MPN+qHFF1fYclkSPilDOKW0s=
 github.com/muesli/clusters v0.0.0-20180605185049-a07a36e67d36 h1:KMCH+/bbZsAbFgzCXD3aB0DRZXnwAO8NYDmfIfslo+M=
 github.com/muesli/clusters v0.0.0-20180605185049-a07a36e67d36/go.mod h1:mw5KDqUj0eLj/6DUNINLVJNoPTFkEuGMHtJsXLviLkY=
 github.com/wcharczuk/go-chart/v2 v2.1.0 h1:tY2slqVQ6bN+yHSnDYwZebLQFkphK4WNrVwnt7CJZ2I=