Hi,
I'm afraid my phone camera isn't up to much so the differences may be hard to see. However, the H1 dark dial takes on the light that you throw at it. So in normal light conditions it looks like this, with a greyish tinge:

In relatively dark light, it is pitch black - I can't photograph this but the picture below gives a sense of the difference:

In cold light (here my marine tank 14K bulbs) it takes on a blue grey shimmer:
...and in sunlight it reflects the sun and glows gold!

