Continuity mistake: As 5 women are walking through the park several extras can be seen in the background. Camera angle switches to aerial view, and the 5 women are the only ones in the park. (00:27:05)
Continuity mistake: When Angie tries to smuggle cake out of the cafeteria, she puts away her tray and then tries to slip after the guard. When he stops her, she turns to make her way back to the now empty table; in the next shot, the tray is on the table once again. (00:16:25)
Take a Break from Your Values - S2-E11
Continuity mistake: When Piper calls Alex she is drinking wine till the glass is empty but in the next shot the glass refills by itself.
Answer: On the show, orange uniforms are worn by the new inmates, while the khaki is the longer-term population. Generally, there's no standardized meaning of the colors as every prison has their own color-coding system. For example, red could mark more dangerous inmates. Other colors could indicate lower-risk prisoners, ones with health issues, area designations, and so on.
raywest