private void contrastColors() {
		Color contrastBg = noFlashBgColor;
		Color contrastFg = FLASH_FOREGROUND_COLOR;
		if (textField.getBackground() == noFlashBgColor) {
			contrastBg = FILTERED_BACKGROUND_COLOR;
			contrastFg = FILTERED_FOREGROUND_COLOR;
		}

		doSetBackground(contrastBg);
		doSetForeground(contrastFg);
	}
Allows "stalled" focus flashing to take place
Ghidra/Framework/Docking/src/main/java/docking/widgets/filter/FilterTextField.java