<sod>{{unreferenced|date=July 2012}}<eod>
<sod>In  [[Culture of Cambodia|Khmer]] and [[Culture of Thailand|Thai]] traditions, there is an astrological rule (which has influence from Hindu mythology) that assigns a color to each day of the week<ref>{{Cite journal|last=Lee|first=Tien-Rein|date=2013-01-01|title=The color we use in our daily life - communicating with color -|url=http://www.repository.rmutt.ac.th/handle/123456789/1175|journal=ประชุมวิชาการ (Proceedings)|language=en|volume=}}</ref> based on the color of the God who protects the day or [[Navagraha]]. For example, the God of Sunday is [[Surya]] who has the color red. These colors of the day are traditional Thai birthday colors. As King [[Bhumibol]] and his son were born on  Mondays, Thailand is decorated with yellow on their birthdays. Thai people often wear clothes corresponding to the color of the day. <eod>