Add range check for color components being within [0, 1]

this solves the potential undefined behaviour in implicit conversion if a color component should
be greater than the maximum float but smaller than the maximum double and allows us
to reuse strToDouble safely

urdf_model/include/urdf_model/color.h

@@ -73,7 +73,10 @@ class Color
       {
         try
         {
-          rgba.push_back(strToDouble(pieces[i].c_str()));
+          double piece = strToDouble(pieces[i].c_str());
+          if ((piece < 0) || (piece > 1))
+            throw ParseError("Component [" + pieces[i] + "] is outside the valid range for colors [0, 1]");
+          rgba.push_back(piece);
         }
         catch (std::runtime_error &/*e*/) {
           throw ParseError("Unable to parse component [" + pieces[i] + "] to a double (while parsing a color value)");