Grea Foundation maintains strict compliance with international intellectual property, public domain principles, and fair-use standards.
Original Diagrams and Graphics
All instructional step-by-step diagrams, anatomy charts, and site wordmarks are original creations of Grea Foundation (All Rights Reserved).
Public Domain Fine Art
Historical artworks created prior to 1928, including Leonardo da Vinci's Mona Lisa (c. 1503–1519), are in the public domain worldwide. Faithful photographic reproductions of two-dimensional public domain works are utilized in accordance with established legal precedent.
Modern Artist References (Fair Use)
Modern artists, including Peter Max, are discussed under educational fair use for biographical commentary, color theory analysis, and historical retrospectives. No unauthorized merchandise or reproduction prints are manufactured or sold.