Corrected formula coding in Color-Coding

I currently have this code 

Case([Follow-Up],"Check on Inspection","#7FE2EA", "Waiting on email response","#f69100")

and I wanted to add a code to highlight a record based on a date field. I tried both of these and they are not correct. Can anyone assist me with how this field should be formatted?

If(Today() > [Adj. By], "<span style='background-color: #FF0000;'>" & [Record ID#] & "</span>", [Record ID#])

Case(
  Today() > [Adj. By], 
  "<span style='background-color: #FF0000;'>" & [Record ID#] & "</span>", 
  [Record ID#]
)

Thank you!