diff --git a/svg.cpp b/svg.cpp
index f17f5a8..aad6f51 100644
--- a/svg.cpp
+++ b/svg.cpp
@@ -45,16 +45,20 @@ void show_histogram_svg(const vector<size_t>& bins) {
 
     double top = 0;
     size_t max_count = bins[0];
+    double sum = 0;
     for (size_t bin : bins) {
         if (max_count < bin) {
             max_count = bin;
         }
+        sum += bin;
     }
+    double average = sum / bins.size();
 
     for (size_t bin : bins) {
         const double bin_width = MAX_WIDTH * (static_cast<double>(bin) / max_count);
         svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
-        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", "red");
+        string fill_color = (bin > average) ? "red" : "green";
+        svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "black", fill_color);
         top += BIN_HEIGHT;
     }