I can do that with green too. And blue. Even combinations of the three work. It's even easier than you think.
Nice collection of red stuff, I stared at a few for quite some time. I wasn't scared away, which proves I'm not a whale, so a fat lot of good that will do your wallet.
I've done it with black, but then I switched to night mode and noticed white has the same effect. I suppose I should have mentioned that in the post. Too late now.
Thank you for contributing to my broke-ass blogger experience.