It doesn't matter if it's sunny outside or raining, if you're having a good or bad day, bright colors are always cheerful. Well, they always seem to put a smile on my face anyway. It's the end of the week and if you're counting down the minutes to clock out maybe this will help.
I found this awesome photography piece a while ago called Aqueous Fluoreau by Mark Mawson. It's amazing what you can do with some ink and water. Enjoy!