Filters for flashlights
When you add a filter to your flashlight you also add a splash of colour! Red light, for instance, is great if you want to maintain your night vision. Green light won't scare away game and with blue light you will see contrast and traces of blood well. Useful when you're hunting!
All about light colours
Flashlights can contain different colours. These different colours all have their own advantage, in order to see better in certain circumstances. Which colour are you using at the moment?