Then you can buy empty Stylefile markers and fill them with your own shades

from DJ Red Alert to LL Cool J

released in 1999

A dual-tipped colorless blender pen — brush end for broad mixing

which keeps it from rolling off a slanted drafting table and gives a stable grip when working alongside a ruler or template

amsterdam standard acrylic paint 20 ml 36 set general selection Dart Then you can buy emptyAmsterdam Standard Acrylic Paint in 36 tubes of 20ml each extensive color palette with well balanced selection covering primary, secondary, intermediate tones, deep earth shades, and specialty values. Gives artists a highly versatile toolkit for larger or complex works without needing to constantly mix custom shades. Medium viscosity holds visible brush strokes while providing smooth coverage. Dries to satin sheen, water based and odorless.