Dealer Lighting?

Yeah my LCS has a really nice mood lighting type thing going on, too.

Offer the dealer a price for his light too.
So much depends on where your talking about. In most coin stores they prefer to use Fluorescent lighting to keep the prices down and not emit so much heat. Today, many are switching to LED lamps. Those too emit less heat and use only a fraction of the electric. At most coin shows there are restrictions to how many fixtures and the total wattages of those. The more fixtures, the less the lamps wattages should be. This means more difficult to see coins though.
It is amazing how lighting plays tricks on what you see or think you see. In many halls used for coin shows the ceiling lighting is sometimes not to good for viewing coins. Halogen lighting, old Mercury Vapor, Fluorescent, Incandescent, LED, etc. are sometimes all mixed together producing visability that at home just can't be duplicated.
And too, sometimes it's you that is seeing something you want, need, like and that is not always what your looking at.
However, many dealers well know how lighting effects how a coin looks. Lighting is a real art today and is used in stores of all kinds to make things look better than they really are. Ever notice on TV how many streets are wet when showing cars. The lighting effects from wet pavement always makes a car look better. Same with the lighting in auto show rooms. Those cars never look the same outside.
So when you go to buy a coin, take your time and look carefully at what it is.