Studio Acrylics Sand Texture Gel (4 Colors) Work with a knife to obtain gritty material effects. Ready to use, it can be used directly or mixed with Pébéo acrylic colors 525002 (3167865250029) - Yellow 525012 (3167865250128) - Red 525022 (3167865250227) - Black 525032 (3167865250326) - White