some PDFs wont print in color.

I am having an issue that started about a week ago. I am unable to print PDF's from one particular fillable form in color. the print preview remains in black and white.

Any other unrelated PDF will print in color fine.
Opening the PDF in the browser, Inkscape or Photoshop results in a black and white image inserted into the document.
I was able to print these forms in color from the same file last week.

I have checked the obvious in the print settings in adobe reader and the printer. I have not selected it to print in black and white anywhere in these settings.
Using the free version of reader.

thank you for any help.