Correctly printing out colors with an alpha channel.

node.cpp

@@ -158,6 +158,7 @@ namespace Sass {
       } break;
       
       case numeric_color: {
+        if (size() == 3 || (size() == 4 && at(3).content.numeric_value >= 0xff)) {
           double a = at(0).content.numeric_value;
           double b = at(1).content.numeric_value;
           double c = at(2).content.numeric_value;
@@ -189,6 +190,16 @@ namespace Sass {
             }
             return ss.str();
           }
+        }
+        else {
+          stringstream ss;
+          ss << "rgba(" << at(0).content.numeric_value;
+          for (int i = 1; i < 4; ++i) {
+            ss << ", " << at(i).content.numeric_value;
+          }
+          ss << ')';
+          return ss.str();
+        }
       } break;
       
       case uri: {

spec/basic/22_colors_with_alpha/input.scss

+div {
+  color: rgb(255, $blue: 0, $green: 255);
+  background: rgb(123, 45, 6);
+  flah: rgba(0, 0, 0, 1) + #111;
+  grah: rgba(#fff, .5);
+  blah: rgba(1,2,3,.6);
+}

spec/basic/22_colors_with_alpha/output.css

+div {
+  color: yellow;
+  background: #7b2d06;
+  flah: #111111;
+  grah: rgba(255, 255, 255, 0.5);
+  blah: rgba(1, 2, 3, 0.6); }