Index: gc_lang/fr/webext/content_scripts/panel.css
==================================================================
--- gc_lang/fr/webext/content_scripts/panel.css
+++ gc_lang/fr/webext/content_scripts/panel.css
@@ -8,16 +8,16 @@
     padding: 0;
     margin: 0;
     position: fixed;
     box-sizing: content-box;
     z-index: 2147483641; /* maximum is 2147483647: https://stackoverflow.com/questions/491052/minimum-and-maximum-value-of-z-index */
-    border: 2px solid hsl(210, 10%, 50%);
+    border: 2px solid hsl(210, 50%, 50%);
     border-radius: 10px 10px 10px 10px;
     background-color: hsl(210, 0%, 100%);
     color: hsl(0, 0%, 0%);
     font-family: "Trebuchet MS", "Fira Sans", "Liberation Sans", sans-serif;
-    box-shadow: 0 0 2px 1px hsla(210, 50%, 50%, .5);
+    box-shadow: 0 0 1px 6px hsla(210, 50%, 50%, .5);
     line-height: normal;
     text-shadow: none;
     text-decoration: none;
     text-align: left;
     hyphens: none;
@@ -29,14 +29,14 @@
 }
 
 div.grammalecte_panel_bar {
     position: sticky;
     width: 100%;
-    background-color: hsl(210, 0%, 90%);
+    background-color: hsl(210, 20%, 92%);
     border-radius: 10px 10px 0 0;
-    border-bottom: 1px solid hsl(210, 10%, 80%);
-    color: hsl(210, 10%, 4%);
+    border-bottom: 1px solid hsl(210, 20%, 86%);
+    color: hsl(210, 30%, 40%);
     font-size: 20px;
 }
 div.grammalecte_panel_title {
     padding: 10px 20px;
 }
@@ -66,25 +66,25 @@
     color: hsl(150, 0%, 100%);
     text-align: center;
     cursor: pointer;
 }
 div.grammalecte_copy_button:hover {
-    background-color: hsl(150, 100%, 40%);
+    background-color: hsl(150, 90%, 35%);
 }
 div.grammalecte_move_button {
     display: inline-block;
     padding: 2px 5px;
-    background-color: hsl(180, 80%, 50%);
+    background-color: hsl(180, 50%, 60%);
     font-family: "Trebuchet MS", "Fira Sans", "Liberation Sans", sans-serif;
     font-size: 22px;
     font-weight: bold;
     color: hsl(180, 0%, 100%);
     text-align: center;
     cursor: pointer;
 }
 div.grammalecte_move_button:hover {
-    background-color: hsl(180, 100%, 60%);
+    background-color: hsl(180, 80%, 65%);
 }
 div.grammalecte_close_button {
     display: inline-block;
     padding: 2px 10px;
     border-radius: 0 8px 0 0;