anchor.diff:  							</div>
   							<%= submit_tag "Change", :class => "waves-effect btn "  %>
   						<% end %>
  -
  +					</div>
  +					<canvas id="color_shower" width="300" height="150">
  +					</canvas>
   					</div>
   				</div>
   			</div>
  
positive.code: 	<head>
    		<%= stylesheet_link_tag "materialize" %>
    		<%= javascript_include_tag 'materialize' %>
  	</head>
  
  	<body>
  		<div class = "container">
  			
  			<div class="row">
  
negative.code: 
  					<div class="light_picker">
  						<%= form_tag(multi_update_lights_path) do %>
  							<div class="section">
  								<p><%= label_tag("Brightness") %></p>
  								<%= range_field_tag :bri, 254, in: 0..254, class: 'update col s8', onchange:"draw();" %>
  								<%= text_field_tag :bri, 254, class: 'update col s2' %>
  							</div><br><br>
  
  							<div class="section">
  								<p><%= label_tag("Hue") %></p>
  								<%= range_field_tag :hue, 65535,in: 0..65535, class: 'update col s8', onchange:"draw();" %>
  								<%= text_field_tag :hue, 65535, class: 'update col s2' %>
  							</div><br><br>
  							<div class="section">
  								<p><%= label_tag(:sat, "Saturation:") %></p>
  								<%= range_field_tag :sat, 254, in: 0..254, class: 'update col s8', onchange:"draw();" %> 
  								<%= text_field_tag :sat, 254, class: 'update col s2'%>
  							</div><br><br>
  							<div class="hubben-pic">
  								<% @lights.each_with_index do |light, i| %>
  									<div>
  