Border Size Color
Draws a border around the image, in the width and color defined. The border will overlap the image rather than altering its size.
The default is no border, and the width and color values must be specified as a comma-separated list with the width first. Valid color values are a color keyword or 3- (RGB), 4- (ARGB) 6- (RRGGBB) or 8-digit (AARRGGBB) hexadecimal values. The "A" in a 4- or 8-digit hex value represents the color's alpha transparency. The default is transparent white,
There are four additional parameters for adjusting the border size on individual sides of an image. The
border parameter must be set for these additional parameters to take effect.
Documentation for these parameters can be found in the links below:
See the API specification for more information about this parameter's value ranges and format.