I think you're talking about the small blue arrow above the gear position indicator? I thought that was a recommendation for best fuel economy. But yes I agree, it wants me to shift into 6th gear at 50 km/hr which lugs the engine a bit. I've learnt to ignore it as well.If you’re referring to the gear-shift / up-shift indicator light, I have it on my Exclusive model, and would suggest you should be thankful you don’t have it, as it’s so conservative as to be worse than useless. If one would follow its recommendations, you’d be constantly on the threshold of lugging the engine. I ignore it.
BMW shift lights are usually bright white and come on when you're thrashing it and getting close to redline.