Could be Union Jack. For instance in NCIS, Ducky served in the Royal Army Medical Corps in Afghanistan
http://ncis.wikia.com/wiki/Broken_Bird_(episode)
Could be the French flag
The organization Médécins Sans Frontières was in Pakistan near the Afghan border.
I spent hours looking at photos of Mujahadeen in the early 80's and I noticed that the women seemed to prefer three colors of clothing, pale red, pale blue or white. So a group of women would be red, white and blue.