Golden Fluid Acrylic 30ml Phthalo Green (Yellow Shade) Series 4Fluid Acrylics are highly intense, permanent acrylic colours with a consistency similar to heavy cream. Produced from lightfast pigments, not dyes, they offer very strong colours with very thin consistencies. No fillers or extenders are added and the pigment load is comparable to Golden Heavy Body Acrylics. Unlike mixtures of heavy-bodied paints and water which produce weak colour and films by dilution Fluid Acrylics contain high pigment levels suspended in an acrylic polymer vehicle .