Avery Easy Peel File Folder Labels on 4" x 6" Sheets, 2/3" x 3-7/16", White, 3 Pack, 756 Labels Total (32131)

What are the measurements of one label??

These are too thin (transparent). Does Avery make a thicker label that would cover any marks or writing underneath the sticker?

Can you print a background color on the labels?

I am using a hp officejet pro 8600 plus; how do i set these up for printing?