fix compile error: al_Shader.hpp:218:50: error: unknown type name \'Color\'; thanks to Sihwa Park
fix compile error: al_Shader.hpp:218:50: error: unknown type name \'Color\'; thanks to Sihwa Park

AlloSphere-Research-Group/AlloSystem,AlloSphere-Research-Group/AlloSystem,AlloSphere-Research-Group/AlloSystem,AlloSphere-Research-Group/AlloSystem,AlloSphere-Research-Group/AlloSystem