<?xml version="1.0" ?>
<robot name="o2s_robot" xmlns:xacro="http://www.ros.org/wiki/xacro" >

<material name="white">
  <color rgba="1 1 1 1"/>
</material>

<material name="yellow">
  <color rgba="1 1 0.5 1"/>
</material>

<material name="black">
  <color rgba="0 0 0 1"/>
</material>  

<material name="orange">
    <color rgba="1 0.3 0.1 1"/>
</material>

<material name="blue">
    <color rgba="0.2 0.2 1 1"/>
</material>

<material name="grey">
  <color rgba="0.4 0.4 0.4 1"/>
</material>

</robot>
