Luis Seven Martins, L7Matrix, was only 13 when he ﬁrst met spray paint. This experience has opened the door for many upcoming experiments that artist named L7m was about to perform. The 7 in his nick stands for the seventh letter that corresponds to the ﬁrst letter of his middle name, and M and L are there for his ﬁrst and last name. While exploring mixtures for his work, Luis tried many techniques and ﬁnally created his unique approach by using china ink, latex, pastel, and acrylic. In one occasion, Luis said that he likes to use traditional tools: that one like spray and acrylic paint. It is not just the technique that L7m experimented with. He also came to a unique style through his experimentation – namely, he combines geometrical elements and very stylized color puzzles with realism attained by elaborated details. It is precisely that combination of color simplicity and free geometry that awakens certain contradictions and even uncomfortable feelings in the viewers.