static void drawRect(BufferedImage image, int x, int y, int w, int h, Color color) {
  Graphics2D g = imageGraphics(image);
  drawRect(g, x, y, w, h, color);
  g.dispose();
}

static void drawRect(Graphics2D g, int x, int y, int w, int h, Color color) {
  g.setColor(color);
  g.drawRect(x, y, w, h);
}

static void drawRect(Graphics2D g, Color color, Rect r) {
  drawRect(g, r, color);
}

static void drawRect(Graphics2D g, Rect r, Color color) {
  g.setColor(color);
  g.drawRect(r.x, r.y, r.w, r.h);
}

static void drawRect(Graphics2D g, Rect r) {
  g.drawRect(r.x, r.y, r.w, r.h);
}

// draw on currentImage()
static void drawRect(int x, int y, int w, int h, Color color) {
  drawRect(currentImage(), x, y, w, h, color);
}

static void drawRect(Rect r, Color color) {
  drawRect(r.x, r.y, r.w, r.h, color);
}

ifclass Rect
static void drawRect(BufferedImage image, Rect r, Color c) {
  if (r != null) drawRect(image, r.x, r.y, r.w, r.h, c);
}
endif

Began life as a copy of #1009141