When they get read, I mark them as such and they get a little green check mark next to them. (blog.the-ebook-reader.com)
The site offers more visibility for your profile the more often you login and when browsing through profiles you'll notice green checks showing what you and that member have in common. (bestdatingsites.com)
Look impeccable in your favourite pair of olive green cotton trousers and a white and green checked shirt. (myntra.com)