Merge pull request #1079 from Ana06/suggest_track_color

Different colors for new tracks, types and levels

app/controllers/admin/difficulty_levels_controller.rb

@@ -11,7 +11,7 @@ module Admin
     def edit; end
 
     def new
-      @difficulty_level = @conference.program.difficulty_levels.new
+      @difficulty_level = @conference.program.difficulty_levels.new(color: @conference.next_color_for_collection(:levels))
     end
 
     def create

app/controllers/admin/event_types_controller.rb

@@ -9,7 +9,7 @@ module Admin
     def edit; end
 
     def new
-      @event_type = @conference.program.event_types.new
+      @event_type = @conference.program.event_types.new(color: @conference.next_color_for_collection(:types))
     end
 
     def create

app/controllers/admin/tracks_controller.rb

@@ -14,7 +14,7 @@ module Admin
     end
 
     def new
-      @track = @program.tracks.new
+      @track = @program.tracks.new(color: @conference.next_color_for_collection(:tracks))
     end
 
     def create