How to Make a colored line

How to make the border color of an article that uses its own line just choose the color that we like script is simple enough to make our blog so beautiful. do not be afraid of your blog it will be hard Loding this scrip I have tried my own blog, just look at the red line of this blog, you are afraid of her blog to be heavy check here first

<span style="color: black; font-family: 'Times New Roman',serif;"> </span><br /> <hr align="center" noshade="noshade" size="2" style="color: #DF0101;" width="100%" />
Please, copy and paste the script above is replace the color you prefer