Colored area doesn't display in simulator mode

[bebertii]

Hi,
I made a playground with some black stripes, but they aren't visible.
Here is the code of my playground :
`

Premier terrain de course pour le robot Thymio fait en mai 2020 pour Aseba 1.6.

<color name="white" r="1.0" g="1.0" b="1.0" />
<color name="yellow" r="1.0" g="1.0" b="0.9" />
<color name="red" r="1.0" g="0.6" b="0.6" />
<color name="blue" r="0" g="0" b="1.0" />
<color name="black" r="0" g="0" b="0" />
<color name="pretty shade of purple" r="0.8" g="0.1" b="0.7" />


<world w="400" h="100" color="white"  energyScoringSystemEnabled="true"/>


<camera x="190" y="50" altitude="300" yaw=" 1.57" pitch="-1.56" />







<robot type="thymio2" x="10" y="50" port="33334" angle="0" name="Charles-Edouard" nodeId="1"/>

<area name="bande1" color="black">
  <point x="50" y="100" />
  <point x="60" y="100" />
  <point x="60" y="0" />
  <point x="50" y="0" />
</area>
<area name="bande2" color="black">
  <point x="100" y="100" />
  <point x="130" y="100" />
  <point x="130" y="0" />
  <point x="100" y="0" />
</area>
<area name="bande3" color="black">
  <point x="150" y="100" />
  <point x="155" y="100" />
  <point x="155" y="0" />
  <point x="150" y="0" />
</area>
<area name="bande4" color="black">
  <point x="230" y="100" />
  <point x="280" y="100" />
  <point x="280" y="0" />
  <point x="230" y="0" />
</area>
<area name="bande5" color="black">
  <point x="350" y="100" />
  <point x="360" y="100" />
  <point x="360" y="0" />
  <point x="350" y="0" />
</area>

` Is it a bug or am I wrong ? Thanks