左侧班级列表的黑点改成灰色

app/views/layouts/_user_courses.html.erb

@@ -4,7 +4,7 @@
       <% is_teacher = User.current.logged? && (User.current.admin? || User.current.allowed_to?(:as_teacher,course)) %>
       <p href="javascript:void(0);" id="show_course_<%= course.id %>" class="course_list_menu hidden" title="<%= course.syllabus.title+' · '+(course.is_public? ? '公开班级：' : '私有班级：')+course.name+'（'+current_time_and_term(course)+'）' %>">
         <%= link_to course.syllabus.title, syllabus_path(course.syllabus_id), :target => '_blank'%>
-        &nbsp;<font class="fb">·</font>&nbsp;
+        &nbsp;<font class="fb c_grey">·</font>&nbsp;
         <%= link_to course.name, course_path(course.id,:host=>Setting.host_course), :target => '_blank'%>
       </p>
       <%#= link_to course.name+"("+current_time_and_term_short(course)+")", course_path(course.id,:host=>Setting.host_course),