Since the latest Update (2.13.2) The taken appointments don't have a grey background anymore but rather a very small grey outline. This is barely recognizable and I did not see the outline at all until someone specifically pointed at it. I tried changing it via the Style Sheet with the codes you provided (via the no.slots class) but any code I entered did not change a thing on the calender. I would appreciate your help and it's more than enough if I could revert it back as to how it was before the latest update. Thanks in Advance!