plot.setBackgroundAlpha(alpha); int[] bgRGB = chart.getBgRGB(); if (bgRGB != null) { plot.setBackgroundPaint(new Color(bgRGB[0], bgRGB[1], bgRGB[2], chart.getBgAlpha()));
plot.setBackgroundAlpha(alpha); int[] bgRGB = chart.getBgRGB(); if (bgRGB != null) { plot.setBackgroundPaint(new Color(bgRGB[0], bgRGB[1], bgRGB[2], chart.getBgAlpha()));