Chris Solar makes a strong geometric pattern more dramatic by outlining parquetry panels with colored epoxy resin. Although you could use any pattern that appeals to you, he demonstrates his process using a pattern of repeating pentagons. This veneering technique could be used for doors, as Solar does, or for any veneered surface, such as tabletops, cabinet panels, or decorative boxes. https://www.finewoodworking.com/2019/12/10/dazzling-patterns-in-parquetry