White text in an accessible PDF

Question

When I use the Zoom–Reflow option in Acrobat on an accessible (508 compliant) PDF, all of the white text disappears into the white background since reflowing hides everything tagged as an artifact (which includes the colored backgrounds that the white text is on top of). Is there a good way to get around this with with out redesigning the document to omit white text? The original file was created in InDesign CS4 with many of the accessible features added within that program.
Thanks!

Answer 1

Unfortunately, I can not create the PDF.  It is uploaded by the user, and I have to open the PDF, insert the text and save it.  BUT, I did find the solution in a slight roundabout way.
1) Create an image file containing the text I need
2) Use that image file as a watermark with 10 opacity and use the tag's x,y coordinate setting.
Below is the code I found to work:
<!--- Create a blank image that is 500 pixels square. --->
<cfset myImage=ImageNew("",500,500)>
<!--- Set the background color for the image to white. --->
<cfset ImageSetBackgroundColor(myImage,"white")>
<!---Clear the rectangle specified on myImage and apply the background color. --->
<cfset ImageClearRect(myImage,0,0,500,500)>
<!--- Turn on antialiasing. --->
<cfset ImageSetAntialiasing(myImage)>
<!--- Draw the text. ---> 
<cfset attr=StructNew()>
<cfset attr.size=50>
<cfset attr.style="bold">
<cfset attr.font="Verdana">
<cfset ImageSetDrawingColor(myImage,"blue")>
<cfset ImageDrawText(myImage,"PROOF",100,250,attr)>
<!--- Write the text image to a file. --->
<cfimage action="write" source="#myImage#" destination="text.tiff" overwrite ="yes">
<!--- Use the text image as a watermark in the PDF document. --->
<cfpdf action="addwatermark" source="c:/book/1.pdf" image="text.tiff"
    destination="watermarked.pdf" overwrite="yes">