PawelWiki

If you want to change the label of a field in jira, you can do so by writing a simple script, and adding it to the description of the field. The below example makes the field colored red.

<script type="text/javascript">
 
jQuery(document).ready(function($) {
	JIRA.bind(JIRA.Events.NEW_CONTENT_ADDED, function (e,context) {		
		callFunction();
	});
		callFunction();
	function callFunction(){  		
              AJS.$('label[for=customfield_11700]').css({color:'red'});
              AJS.$("#customfield_11700").parent('label').css('color','red');
	}
});
</script>

If you'd like to highlight the background of the field's input box, you can do so with the following code snippet by adding it to the description of the custom field:

<script type="text/javascript">
target = document.getElementById('customfield_13800');
if (target) {
            target.style="background-color: lightyellow";
}
 
</script>

<script type="text/javascript">
  priority = document.getElementById('priority');
  if (priority) {
      target = document.getElementById('customfield_12800');
      // Hide the target field if priority isn't critical
      if (priority.value != 2) target.style.display='none';
 
      priority.onchange=function() {
          if (this.value == 2) {              
                     target.style.display = '';
                     // set background color of the text box to yellow
                     target.style.backgroundColor = "yellow";
                     // set font color to red
                     target.style.color = "red";  
                     target.value="enter message here";
                  } else {
                 target.style.display='none';
          }
      }
  }
 </script>

You can display informational messages in your Jira tickets for users to see. See the following URL: AUI Messages

Source URL: Atlassian Documentation - Lozenges

Although the documentation is a bit outdated, and the colors don't match exactly what is in the documentation, in principal you can add an aui-lozenge to your option in order to create colorful options in your drop down menus:

In order to accomplish this, you need to add span code as you see it in the screenshot: