DGCubes
Veteran
Can I use a cube with the yellow stickers taken off?
No. The following regulations apply:
3d) Puzzles must have colored parts, which define the color scheme of the puzzle and must be one and only one of the following: colored stickers, colored tiles, colored plastic, or painted/printed colors. All colored parts of a puzzle must be made of a similar material.
3d2) The colors of the colored parts must be solid, with one uniform color per face. Each color must be clearly distinct from the other colors.
Essentially you'd be trying to use the plastic color as one of the six colors, which means you would be using two colored parts: colored stickers and colored plastic. You can only have one type of colored part.