[Lazortag]

Out of context, con colour means very little. Even though Cazic Thule is blue to me I somehow think I'd have a lot of trouble landing spells on him :p. Seriously though, if a mob is closer to your level it will resist a lot more than mobs that are much lower. At level 60 a level 59 mob is blue, but so is a level 45 mob. My spells are practically unresistible on level 45 mobs, whereas I'd have trouble sticking anything on level 59 mobs. These are extreme examples, but my point is that a mob close to your level should be resisting a lot, even if it's the same con colour as a mob that rarely resists. 30% (what someone said above) resists sounds very reasonable and very classic to me, from what I remember. It was purposely changed a while ago to be like this. Sometimes you will get annoying resist streaks but that's just bad luck/random numbers being random.