diff --git a/svg.cpp b/svg.cpp
index ae837dc..41250c6 100644
--- a/svg.cpp
+++ b/svg.cpp
@@ -25,7 +25,7 @@ svg_text(double left, double baseline, string text) {
 }
 
 void svg_rect(double x, double y, double width, double height, string stroke = "black", string fill = "black"){
-    cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << "' stroke='" << stroke << "' fill='#" << fill << "' />";
+    cout << "<rect x='" << x << "' y='" << y << "' width='" << width << "' height='" << height << "' stroke='" << stroke << "' fill='#" << fill << fill << fill << "' />";
 }
 
 void
@@ -50,20 +50,22 @@ show_histogram_svg(const vector<double>& bins) {
         if (bins[j] > maxb) maxb = bins[j];
     }
 
-    maxb = maxb * BLOCK_WIDTH;
+    double maxb1 = maxb * BLOCK_WIDTH;
 
     for (size_t bin : bins) {
 
     double bin_width;
 
-        if (maxb > MAX_ASTERISK)
+    int color = (10 - (bin * 9) / maxb);
+
+        if (maxb1 > MAX_ASTERISK)
         {
-            bin_width  = BLOCK_WIDTH * MAX_ASTERISK * (bin / maxb);
+            bin_width  = BLOCK_WIDTH * MAX_ASTERISK * (bin / maxb1);
         }
         else bin_width = BLOCK_WIDTH * bin;
 
     svg_text(TEXT_LEFT, top + TEXT_BASELINE, to_string(bin));
-    svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "red", "ffeeee");
+    svg_rect(TEXT_WIDTH, top, bin_width, BIN_HEIGHT, "violet", to_string(color));
     top += BIN_HEIGHT;
 }