diff --git a/lib/Plot.cpp b/lib/Plot.cpp
index e585c0e..aaee552 100644
--- a/lib/Plot.cpp
+++ b/lib/Plot.cpp
@@ -392,6 +392,31 @@ void Title::operator()(PlotOptions &option) const
     option.title = title_;
 }
 
+// Palette constructor /////////////////////////////////////////////////////////
+Palette::Palette(const std::vector<std::string> &palette)
+: palette_(palette)
+{}
+
+// Palette modifier ////////////////////////////////////////////////////////////
+void Palette::operator()(PlotOptions &option) const
+{
+    option.palette = palette_;
+}
+
+// category10 palette //////////////////////////////////////////////////////////
+const std::vector<std::string> Palette::category10 =
+{
+    "rgb '#1f77b4'",
+    "rgb '#ff7f0e'",
+    "rgb '#2ca02c'",
+    "rgb '#d62728'",
+    "rgb '#9467bd'",
+    "rgb '#8c564b'",
+    "rgb '#e377c2'",
+    "rgb '#7f7f7f'",
+    "rgb '#bcbd22'"
+};
+
 /******************************************************************************
  *                          Plot implementation                               *
  ******************************************************************************/
@@ -415,6 +440,7 @@ void Plot::initOptions(void)
     options_.label[0]     = "";
     options_.label[1]     = "";
     options_.lineColor    = "";
+    options_.palette      = Palette::category10;
 }
 
 // plot reset //////////////////////////////////////////////////////////////////
@@ -695,6 +721,11 @@ ostream & Latan::operator<<(ostream &out, const Plot &plot)
     {
         out << "set ylabel '" << plot.options_.label[y] << "'" << endl;
     }
+    for (unsigned int i = 0; i < plot.options_.palette.size(); ++i)
+    {
+        out << "set linetype " << i + 1 << " lc " 
+            << plot.options_.palette[i] << endl;
+    }
     for (unsigned int i = 0; i < plot.headCommand_.size(); ++i)
     {
         out << plot.headCommand_[i] << endl;
diff --git a/lib/Plot.hpp b/lib/Plot.hpp
index 083acfe..478c289 100644
--- a/lib/Plot.hpp
+++ b/lib/Plot.hpp
@@ -181,14 +181,15 @@ struct Range
 
 struct PlotOptions
 {
-    std::string  terminal;
-    std::string  output;
-    std::string  caption;
-    std::string  title;
-    unsigned int scaleMode[2];
-    Range        scale[2];
-    std::string  label[2];
-    std::string  lineColor;
+    std::string              terminal;
+    std::string              output;
+    std::string              caption;
+    std::string              title;
+    unsigned int             scaleMode[2];
+    Range                    scale[2];
+    std::string              label[2];
+    std::string              lineColor;
+    std::vector<std::string> palette;
 };
 
 class PlotModifier
@@ -295,6 +296,21 @@ private:
     const std::string title_;
 };
 
+class Palette: public PlotModifier
+{
+public:
+    static const std::vector<std::string> category10;
+public:
+    // constructor
+    explicit Palette(const std::vector<std::string> &palette);
+    // destructor
+    virtual ~Palette(void) = default;
+    // modifier
+    virtual void operator()(PlotOptions &option) const;
+private:
+    const std::vector<std::string> palette_;
+};
+
 /******************************************************************************
  *                               Plot class                                   *
  ******************************************************************************/