So I'm new to processing. I've only started programing and stuff like a month ago. I'm kinnda stuck. I'm trying to make this sort of drawing thing. You use the arrow keys to change the color but it isn't working out how I thought it would. Can anyone tell me what I'm doing wrong?

 

color strokeVal = color(255,0,0);
void setup () {
  size(600,500);
  background(0);
}

void draw () {
  text("Up arrow for red, the down arrow for blue, the right for yellow and left for green.", 230, 300);
  stroke(strokeVal);
   if (mousePressed) {
  line(mouseX,mouseY,pmouseX,pmouseY);
  }
}

void keyPressed () {
  if (key == CODED) {
    if (keyCode == UP) {
      strokeVal = (255,0,0);
    }else if (keyCode == DOWN) {
      strokeVal = (0,0,255);
    }else if (keyCode == RIGHT) {
      strokeVal = (255,255,0);
    }else if (keyCode == LEFT) {
      strokeVal = (0,255,0);
  } else {
    strokeVal = (0,0,0);
  }
}