Filters: Ocher for Sand / Light Filter for Wood (AK Interactive) (AK261) (56)Enamel Product. Filters are designed to achieve a subtle tonal variation for vehicles especially in monotone camouflage colours. Shake and apply directly from the bottle with a flat brush. This filter allows us to subtly change the base tone of our vehicles and models in sand colours and is also useful to apply on parts that simulate wood. At the same time, the filter adds depth and richness to our vehicle, preparing it for the next painting steps.