<mujocoinclude>
    <material name="MatGnd" specular=".3" shininess=".3" reflectance="0.3" rgba=".5 .55 .5 1"/>
    <material name="MatGnd2" specular=".3" shininess=".3" reflectance="0.3" rgba="0. 1. 0. 1"/>
</mujocoinclude>
