Passing color as argument when using StdDraw in java

Passing color as argument when using StdDraw in java

Having some trouble passing color argument if at all possible when using
StdDraw in Java.
What I would like to do is passing a color variable f.e. "RED", "GREEN",
"BLUE" to set the pen color of the drawing function to get different color
each time I run through for loop.
Here is the code for more details of what I am trying to accomplish.
static void DrawCircleSizeColor()
{
String[] myColorArray = {"RED","GREEN","BLUE"};
double x = 20;
double y = 20;
double r = 20;
int c = 0;
for (int i = 0; i <= 3.0; i++)
{
StdDraw.setPenColor(Color.getColor(myColorArray[c]));
StdDraw.circle(x, y, r);
c++;
r--;
}
Hope you understand my where I am going with this
Thanks -EE