Vovinam adopted as the official color for Vovinam uniforms. A separate development of the "Việt Võ Đạo Federation" in 1973 until 1990 the uniforms' color was black. In the summer of 1990, Vovinam masters from around the world met at the International Vovinam-Viet Vo Dao Conference in California with the goal of creating a structured organization for Vovinam Việt Võ Đạo outside Vietnam (the International Vovinam-Viet Vo Dao Federation). One of the decisions was that the suit in Vovinam Việt Võ Đạo were now to be blue worldwide. The student begins with a cyan belt - the same color as his/her
Japanese martial arts rule of thumb, the primary purpose of a "koryū" martial art was for use in war. The most extreme example of a "koryū" school is one that preserves its traditional, and often ancient, martial practices even in the absence of continuing wars in which to test them. Other "koryū" schools may have made modifications to their practices that reflect the passage of time (which may or may not have resulted in the loss of ""koryū"" status in the eyes of its peers). This is as opposed to "modern" martial arts, whose primary focus is generally upon the self-improvement (mental, physical,