Image Core crop filling color
Suggestions
There is a new "fillcolor" option in the next Image Support module release that will support this - so instead of having to modify the module just add it to the URL or the template image call - i.e.
&crop=fill&fillcolor=0:0:0
So it is:
red:blue:green
with valid values from 0 -> 255 for each.
Let me know if that works.
Thanks!