As you will see in the pictures to the right, the shapes of the lenses are hardly visible if you are inside but become much more visible outside when they darken or whenever they reflect blue light.
For the indoor photos, the slightly yellow color comes from the light that is left when you take away a part of the full spectrum of white light (in our case blue light). The lenses do not have any yellow tint, its just our Blueguard coating doing what it does best, reflecting blue light!
The nose part can be easily adjust by bending it and it stays in place so the glasses sit perfect on every kind of nose, including Asian noses with almost no bridge.
Sizing guide can be found here and if you want to get a custom size please read this.