Consider shadow as color.

src/CMakeLists.txt

@@ -40,7 +40,9 @@ target_link_libraries(mmo_extractor
 
 file(GLOB mmp_extractor_src "mmp_extractor/*")
 add_executable(mmp_extractor ${mmp_extractor_src})
-target_link_libraries(mmp_extractor common)
+target_link_libraries(mmp_extractor
+    common
+)
 
 file(GLOB model_src "model/*")
 add_library(model ${model_src})

src/mmp_extractor/mmp.h

@@ -100,10 +100,7 @@ struct segment
         uint16_t getTexture() const { return texture_index & 0x0fff; } // first 4 bits are unk (flags?)
     };
 
-    struct shadow
-    {
-        uint8_t unk[4];
-    };
+    using shadow = color;
 
     struct normal
     {

src/mmp_extractor/mmp_extractor.cpp

@@ -16,16 +16,16 @@
  * along with this program.  If not, see <http://www.gnu.org/licenses/>.
  */
 
+#include "mmp.h"
+
+#include <primitives/filesystem.h>
+
 #include <iostream>
 #include <set>
 #include <stdint.h>
 #include <string>
 #include <sstream>
 
-#include "mmp.h"
-
-#include <primitives/filesystem.h>
-
 using namespace std;
 
 int main(int argc, char *argv[])