track > variation : add bg color

public/site/blueprints/pages/track.yml

@@ -4,6 +4,11 @@ tabs:
   contentTab:
     label: Contenu
     fields:
+      backgroundColor:
+        label: Couleur de fond
+        type: color
+        default: "#E6E6E6"
+        placeholder: "#E6E6E6"
       views:
         label: Rendu
         type: files

public/site/models/project.php

@@ -103,6 +103,7 @@ class ProjectPage extends NotificationsPage {
         $trackData = [
           'title' => (string) $track->title(),
           'slug' => (string) $track->slug(),
+          'backgroundColor' => (string) $track->backgroundColor(),
           'files' => [],
         ];