The red color used in the Vovinam logo.
No machine-readable author provided. <a href="//commons.wikimedia.org/w/index.php?title=User:Thomas_P._Hartmann~commonswiki&amp;action=edit&amp;redlink=1" class="new" title="User:Thomas P. Hartmann~commonswiki (page does not exist)">Thomas P. Hartmann~commonswiki</a> assumed (based on copyright claims).
CC BY-SA 3.0
No machine-readable source provided. Own work assumed (based on copyright claims).