Sets the the border color for only one edge of the element. This property overrides the color set by the border property.
border-top-color: black; border-right-color: rgb(255, 25, 90);
IE5.5+, FF1+, SA1.3+, OP9.2+
| Color keyword | One of the 17 recognized color keywords; aqua, black, blue, fuchsia, gray, green, lime, maroon, navy, olive, orange, purple, red, silver, teal, white and yellow. |
| Hex color | Three two-character numbers in the hexadecimal system(base 16) |
| RGB decimal | Use RGB values from 0 to 255; rgb(255, 0, 333). |
| RGB percentage | Specify a color using percentage values: rgb(100%, 0%, 33%). |