Fix includes

src/gui/menu_color.cpp

@@ -15,6 +15,8 @@
 //  You should have received a copy of the GNU General Public License
 //  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+#include <sstream>
+
 #include "gui/menu_color.hpp"
 #include "menu_item.hpp"
 #include "../util/log.hpp"

src/video/color.cpp

@@ -14,9 +14,12 @@
 //  You should have received a copy of the GNU General Public License
 //  along with this program.  If not, see <http://www.gnu.org/licenses/>.
 
+#include "../math/util.hpp"
 #include "video/color.hpp"
 
 #include <assert.h>
+#include <regex>
+#include <sstream>
 
 const Color Color::BLACK(0.0, 0.0, 0.0);
 const Color Color::RED(1.0, 0.0, 0.0);

src/video/color.hpp

@@ -17,15 +17,10 @@
 #ifndef HEADER_SUPERTUX_VIDEO_COLOR_HPP
 #define HEADER_SUPERTUX_VIDEO_COLOR_HPP
 
-#include "../math/util.hpp"
-
-#include <string>
-#include <sstream>
-#include <vector>
 #include <math.h>
-#include <memory>
+#include <string>
 #include <optional>
-#include <regex>
+#include <vector>
 
 #include <SDL_image.h>