anchor.diff:                                      <legend><fmt:message key="form.objectifs"/></legend>
                                       <div class="fieldset-fields">
                                           <label for="algo1">
  -                                            <form:radiobutton name="algo1" path="algo" value="HSV" checked="checked"/>
  +                                            <form:radiobutton path="algo" value="HSV"/>
                                               <fmt:message key="form.algoHSV"/>
                                           </label>
                                           <label for="algo2">
  -                                            <form:radiobutton name="algo2" path="algo" value="Rgb"/>
  +                                            <form:radiobutton path="algo" value="Rgb"/>
                                               <fmt:message key="form.algoRGB"/>
                                           </label>                                        
                                           <c:if test="${algoOnError == 'has-error'}">
  
positive.code:                                         <span id="foreground-sample-invalid" class="invalid-color"><fmt:message key="form.invalidColor"/></span>
                                      </div>   
                                      <span class="help-block"><fmt:message key="form.rgbHelp"/></span>
                                      <label>
                                          <fmt:message key="form.red"/><input id="foreground-red" class="form-control" type="number" min="0" max="255" aria-describedby="foreground-sample-invalid">
                                      </label>
                                      <label>
                                          <fmt:message key="form.green"/><input id="foreground-green" class="form-control" type="number" min="0" max="255" aria-describedby="foreground-sample-invalid">
                                      </label>
                                      <label>
                                          <fmt:message key="form.blue"/><input id="foreground-blue" class="form-control" type="number" min="0" max="255" aria-describedby="foreground-sample-invalid">
                                      </label>
                                      <span id="help-block-foreground" class="help-block"><fmt:message key="form.help"/></span> 
  
negative.code:                                         <span id="background-sample-invalid" class="invalid-color"><fmt:message key="form.invalidColor"/></span>
                                      </div>
                                      <span class="help-block"><fmt:message key="form.rgbHelp"/></span>
                                      <label for="background-red">
                                          <fmt:message key="form.red"/><input id="background-red" class="form-control" type="number" min="0" max="255" aria-describedby="background-sample-invalid">
                                      </label>
                                      <label for="background-green">
                                          <fmt:message key="form.green"/><input id="background-green" class="form-control" type="number" min="0" max="255" aria-describedby="background-sample-invalid">
                                      </label>
                                      <label for="background-blue">
                                          <fmt:message key="form.blue"/><input id="background-blue" class="form-control" type="number" min="0" max="255" aria-describedby="background-sample-invalid">
                                      </label>
                                      <span id="help-block-background" class="help-block"><fmt:message key="form.help"/></span>
  