public boolean contains(Info otherInfo) {
		if ((otherInfo.color != null && otherInfo.color != color) || 
			(otherInfo.size != null && otherInfo.size != size) || 
			(otherInfo.location != null && otherInfo.location != location) || 
			(otherInfo.image != null) && otherInfo.image != image) {
			return false;
		}
		return true;
	}