Hi Violetblu,
I checked this website smartsource.com and tried the workflow of printing these coupons. I am using Google Chrome browser. So, this website generates the coupons you select and and when you click on Print Coupons button at the top right, it downloads FDF file on your machine and when we open these files with the help of Adobe Acrobat Reader DC it prints these coupons with Document level Javascript.
Now try this:
Open Acrobat Reader DC application
Open any PDF in it
Go to File > Print
Under Print dialog box check whether the option,
'Print in grayscale (black and white)' is checked or not
If it is checked, please uncheck it.
Your HP printer must be listed here at the top and there is a Properties button next to it
Click on it and uncheck any settings for Grayscale printing (if any, is selected)
Then print the coupons.
Let me know if this works.
Thanks,
Abhishek