Continuity mistake: When Piper confronts Alex in the bathroom (saying "you named me"), When Alex turns away you can see that her salt shaker tattoo is upside down.
Continuity mistake: Near the beginning, Piper is sitting on the toilet and you can see her new engagement ring on her finger. When she wipes her eyes with the tissues the ring has vanished. A couple of shots later the ring is back.
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)
Lesbian Request Denied - S1-E3
Continuity mistake: Larry and Cal are cooking hot dogs over an open fire. Larry starts out with a straight stick, Cal with a curved stick. Larry puts his hotdog on the curved stick, then has the straight stick as he puts it over the fire. The swap happens again and Larry ends the scene with the curved stick. Also, the tip of the straight stick swaps from a sharp point to a dull point. (00:40:30 - 00:41:50)
Blood Donut - S1-E7
Continuity mistake: When the girl is holding the flash light to her face, the next shot it's the other way around, then a couple of seconds later it's the first way again. (00:14:40)
Moscow Mule - S1-E8
Continuity mistake: Mercy, who was released several episodes earlier, can be seen sitting at the table when Maria comes back in.
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