UK Edition. Colour and de-stress with this 25 Abstract Patterns For Relaxation: Adult Colouring Book. Test your colours on the Colour Test page. The patterns are printed one-sided in order to prevent bleed-through. Features: 25 Abstract patterns, varying in detail and complexity. Colour Test page. Suggestions - place a sheet of paper between the colouring pages. Colour and frame your favourite patterns. Happy Colouring.