private void doRefresh() {
		if (map == null) {
			return;
		}
		BigInteger indexCount = map.getIndexCount();
		if (indexCount.equals(BigInteger.ZERO)) {
			Arrays.fill(colors, DEFAULT_COLOR);
			repaint();
			return;
		}

		BigInteger bigTotal = BigInteger.valueOf(colors.length);
		for (int i = 0; i < colors.length; i++) {
			if (colors[i] == null) {
				BigInteger index = indexCount.multiply(BigInteger.valueOf(i)).divide(bigTotal);
				Address address = map.getAddress(index);
				colors[i] = service.getColor(address);
			}
		}
		repaint();
	}
Removes previous installed actions for this component.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/overview/OverviewColorComponent.java