Question

In computer processing, what is a single Processing command that will set lines to be drawn in a color that is 100% red, 50% green, and 10% blue (round off the numbers), with 50% transparency.

Answer 1

Well in CSS it would be something like:
background-color: rgba(255, 50%, 10%, 0.5);
Any particular language/program you are trying to use?

Answer 2

Computer processing? In java you could do Color c = new Color(255,127,25,0.5); 255 Red, 127 Green, 10 Blue, and 50%.