the closer the Kevlin value of the bulbs to daylight 5500ish, the less visible they should look given they are in reflective housings that are being lit up by daylight.
bulbs with a higher Kelvin will appear more blue and are therefore likely to be more noticeable.
you have to be a little careful about looking at pictures of these things. cameras have metering systems that balance brightness and colour. I'm a photographer and getting 'accurate' colour and 'brightness' takes a lot of work. not to mention everyones' computer and software interpret images slightly differently.
oh, and of course I could photoshop the proverbial out them easily too - I make fat people thinner, change facial expressions etc, bright lights would be easy
the photos with one headlight converted are the best bet IMHO, better still go take a look at them in someone's car.