private int getPixelIndex(Address address) {
		BigInteger addressIndex = map.getIndex(address);
		if (addressIndex == null) {
			return -1;
		}
		BigInteger bigHeight = BigInteger.valueOf(getOverviewPixelCount());
		BigInteger indexCount = map.getIndexCount();
		return addressIndex.multiply(bigHeight).divide(indexCount).intValue();
	}
Removes previous installed actions for this component.
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/overview/OverviewColorComponent.java