I'm in an assembly that my assistant did. He's off today. But I go into this assembly to change some dimensions and there are 5 sketches showing at the assembly level, and they are all colored bright orange, which looks to me like they are sick. But when I go into the sketches everything is fine, nothing is sick. All 5 sketches look this way and they aren't linked to anything. I've tried turning off relationship colors, tried changing what colors are what in relationship colors but no matter what I do these sketches all appear bright orange from the outside. I figured at the very least turning off relationship colors would show a change in color. I even tried changing the color for overdefined to magenta just to see if that changed the color, but it did not.
It's possible that he may have colored the lines orange in the sketch and turned on "Multi-colored Sketch Display". Right click on the sketch in pathfinder and see if that is the case... If so set it to "Single Color Sketch Display".