Hi
Hayley,
I agree with Badunit's post regarding the orange text in two cells.
One other thing…
The Conditional highlighting rule in your post, copied here, doesn't match your description of what it is to do:
"I have set up a cell to say if text is TBA then make cell and TBA font be orange."
The custom style here is set to apply orange fill and black text to a cell containing the text TBA.
To get orange text on orange fill, change the colour well beside the text styles to match the one beside Colour Fill.
PS: Nice to see the 'correct' spelling of "colour" in the conditional highlighting rule panel.
Regarding this situation:

Note that in every cell containing text in the in the two shaded columns, the last character in the text string is a colon.
Using that consistent property, you can use the rule shown below to do what you want in an 'empty' cell that does contain a formula.
Here the rule is applied only to cell A4
. The formula shown below the table is in that cell.


Regards,
Barry