If you want to make your instrument a real eye-grabber, you can choose from several lighting options. Pricing depends on the combination of features you require, how many lights are involved, where the lights are mounted, how they flash and/or react to your playing, etc. - a quote will be provided once the exact details are decided on, but in general you can expect lighting to add from $500 to $1000 (or more) to the cost of the instrument.
I can mount light-emitting diodes (LEDs) of many different colors in a wide variety of locations and in all sorts of custom patterns. I prefer to use 3mm super-bright LEDs, and to grind them flush with the wood in which they are mounted; this way they are visible from all angles (as their focusing lenses have been removed) and can hardly be felt if you run your finger over them. While lights in the face of the bout show up well in photographs, it is important to note that your audience will take the most notice of lights that are positioned around the outer edges of the bout, on the sides of the spine, and in the scroll. I can also put lights in the fingerboard, although you should note that they are best placed in areas where they will not receive wear from the strings (such as the wide end of the fingerboard) as they are not as resistant to abrasion as the ebony they are mounted in. The lights can be steadily on, or can flash or chase each other in patterns, or can even respond to your playing (through the use of a special circuit I developed); combinations of these are also possible - for example, the Inferno violin's fingerboard has a red flame outline that is constantly on, and orange lights blink automatically in several groups to make the flame flicker, while the yellow core of the flame lights when the strings are played and in proportion to the musical dynamics.
A popular and inexpensive option is the inclusion of one or more red lasers, generally mounted in the scroll. These are particularly effective in smoky clubs, where the beam's path through the air is readily visible.
Also available is the integration of a small blacklight tube into the underside of the violin spine, where it can illuminate UV-reactive paint (several colors available) set into engravings on the inside of the shell. This paint can also be applied to the outside of the shell, where it will glow if there are blacklights in the space where you are playing.