private Color getBackgroundColor(Program program, MarkerSetCacheEntry entry, Address address) {
		return entry == null ? null : entry.getBackgroundColor(address);
	}
Call to signal that the markers for a given program have changed in some way, such as being
removed, changing colors or the active state being changed

@param p the program associated with the markers
Ghidra/Features/Base/src/main/java/ghidra/app/plugin/core/marker/MarkerManager.java