Transparent background (reverse problem)

Hi @Indyflyer Welcome to the Forum
I am not able to offer you a solution to your enquiry but do have a deep interest in Importing Text to S3D.
There is a huge interest in this aspect amongst Members, as a simple Search will reveal, and recently the Official interest of S3D was expressed:

I am also very interested regarding your Use of the Feature you require.
Please can you explain what the Full Rectangle will achieve compared to the A Shape?
Your input will be greatly appreciated.

Given that a Text Feature may not be available for some time several alternatives have been suggested by Members, over a very long period. For ease of use, those that deploy the whole of the required Annotation seem to be best. Whole Annotation refers to a single Character right through to a Lengthy Combination of Text and Symbols.

Happy S3Ding.