I understand that you are unable to print in color from some websites, is that right?
Not to worry, I will be glad to help.
May I know the browser you are using to print from?
Have you reviewed the print settings in the browser?
Request you review the print settings before you print the document or the web page.
Please check the print preview as the printout will be like the way it appears in print preview.
Refer to this HP Article for assistance in printing in color. (The article is meant for printing in black only, but in the Paper/Quality tab as mentioned in the article, next to black only, you will an option to select color as well.)
For assistance in understanding the printer settings, please refer to the below articles.