Couleur ABS sur bilan_etud. See #1008

app/static/css/assiduites.css

 :root {
   --color-present: #6bdb83;
   --color-absent: #e62a11;
-  --color-absent-clair: rgb(252, 151, 50);
+  --color-absent-clair: #e62a11;
   --color-retard: #f0c865;
   --color-justi: #29b990;
   --color-justi-clair: #48f6ff;