Red is the color of the logo of the company I'm currently working for, and during my first 3 years, I used to send all my company e-mail messages in red font. No one complained or told me to use a different color. But when I realized that other people sometimes saw it as being angry or demanding (even though the message was just an acknowledgement), I changed it.
Here are some red things that I use everyday:
SE W910i mobile, pouch, HK drinking bottle (with matching ice-stick), and hairbrush
And this morning during the monthly meeting at our site, I drank my tea in this: