Dr. Christian Shaw of Western Indiana Recovery Services, an opioid treatment program of Hamilton Center Inc., said their clinic has become aware of at least one recent overdose likely attributable to pills called “blues.” Blues are particularly dangerous because they are designed to look like the oxycodone pills many have become accustomed to purchasing from illicit sources, but are often laced with fentanyl, a powerful opioid that can be up to 100 times stronger than morphine.