Victor Bar Stool in Black Finish with Dark Grey Faux Leather Black or Tarry Stools UF Health Temporary changes in stool color from the usual brown most often do not indicate a serious medical problem. But certain color changes may require medical attention, especially if you have other symptoms. Stool Colour Chart A quick clinical guide to interpret stool color changes and their possible causes. Stool appearance can give important clues about gastrointestinal healthbut always correlate with history, examination, and