FW Acrylic Ink Neon Colours Contains 6 29.5 ml cans: - Fluorescent yellow - Fluorescent orange - Fluorescent red - Fluorescent pink - Fluorescent blue - Fluorescent green & nbsp; Water-based pigmented base ink resistant to water (on most surfaces). It also has a high degree of resistance to light. The colours can be diluted to achieve more subtle colours, similar in character to watercolour. You can work with superimposition of layers of ink, as in watercolour and even be mixed with other colours or other acrylics. It can also be used with acrylic or water dials, to achieve glazes or transparencies.