No school like the old school. A quick way to give quick visual feedback in the Classic Salesforce.com UI is to use the built-in icons in conjunction with a formula field. A source that I have used forever seems to work and then not work so I found another URL that seems to work:
Does not work – look below for working links: http://blogforce9dev-developer-edition.ap1.force.com/salesforceicons
Basic Formula I used recently to let the user know that the future class had not updated the page with Approval Updates (Status/Step):
if(Update_Status_Text__c = “Future”,
/* Page has not been updated by the future class */
IMAGE(“/img/msg_icons/error16.png”, “Refresh!”) &
” Refresh Page”,
/* All Good! */
IMAGE(“/img/msg_icons/confirm16.png”, “All Good!”) &
” Page Good!”
)
This is the original page I’ve used for years (No Longer Works): http://www.force2b.net/index.php/2010/08/salesforce-icons/
Update (Mar 2019): And yet another good site: http://www.vermanshul.com/2017/10/quick-tips-salesforce-default-images.html
Update (Feb 2018): Here’s another good site: http://salesforce-stuff.blogspot.com/2012/01/salesforce-images.html