Update cheatsheet.fr.md

12.temporary_ins/40.classical-mechanics/20.n2/10.framework-of-classical-mechanics-2/20.overview/cheatsheet.fr.md

@@ -256,12 +256,12 @@ sur les condtions de mesure des durées et des longueurs?
 
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-<p style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;text-align:left;color:#00aa33">Tous les observateurs partagent</p>
+<p style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;text-align:left;color:#009900">Tous les observateurs partagent</p>
 <hr width=100% size=6px border-style="solid" color=#00bb33>
-<p style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;text-align:left;color:#cccccc">un <span style="color:#0066cc"> invariant spatial<br>
+<p style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;text-align:left;color:#999999">un <span style="color:#0066cc"> invariant spatial<br>
 <span style="font-family:'Times New Roman';margin-left:30px;font-weight:bold;font-size:0.85rem;text-align:right;color:#6699ff">entre deux points A et B de l'espace </span><br>
-<span style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;color:#cccccc">appelé 
-</span><span style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;left;color:#cc3300"> longueur  l<sub>AB</sub>
+<span style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;color:#999999">appelé 
+</span><span style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;left;color:#bb3300"> longueur  l<sub>AB</sub>
 </span><span style="font-family:'Times New Roman';font-weight:bold;font-size:0.85rem;color:#6699ff"> entre ces deux points.</span></p>
 <hr width=100% size=6px border-style="solid" color=#00bb33>
 <p style="font-family:'Times New Roman';font-weight:bold;font-size:1.15rem;text-align:left;color:#cccccc">un <span style="color:#0066cc"> invariant temporel<br>