Color fading for Java UI

gistfile1.java

int[] rgb = {0,0,0};
int i = 0; // current working index
int step = 25;

while(true) {
  // so raise R, raise G, drop R, raise B, drop G, etc?
  int p = (i + 2) % 3; // previous index
  if(rgb[i] >= 255 && rgb[p] > 0) {
    rgb[p] -= step;
    if(rgb[p] < 0) rgb[p] = 0;
  } else {
    if(rgb[i] >= 255) {
      i = (i+1) % 3;
    }
    rgb[i] = (rgb[i] + step);
    if(rgb[i] >= 255) rgb[i] = 255;
  }
  
  java.awt.Color clr = new java.awt.Color(rgb[0],rgb[1],rgb[2]);
  try { Thread.sleep( 250 ); } catch(Exception ex) {}
}