public void run(String arg) { ImagePlus imp = WindowManager.getImage(id); if (imp != null && imp.getWindow() != null) { imp.getWindow().toFront(); return; } int colorWidth = 22; int colorHeight = 16; int columns = 5; int rows = 20; int width = columns * colorWidth; int height = rows * colorHeight; ColorGenerator cg = new ColorGenerator(width, height, new int[width * height], this); cg.drawColors(colorWidth, colorHeight, columns, rows); setProcessor("CP", cg); id = getID(); show(); IJ.register(ColorPicker.class); }