Let me start by telling you that prior to ordering these from Amazon, I ordered the exact pants 1st from Kohl's and then from Walmart.  They have a greenish cast so I kept returning them.  I actually chatted with Amazon who assured me they were tan.  They arrived with the same green look (depends on the lighting) as the others.  My son needs tan color for work but apparently, ran into no problem wearing these.  I ordered the same pants the year before with no greenish cast so I don't know why the khaki color has changed.