Young-Helmholtz Trichromatic theory. the theory that the retina contains three different colors receptors-one most sensitive to red, one to green, one to blue-which when stimulated in combination can produce the perception of any color.
$62 (cost per guest). In 2015, the average cost of wedding catering is between $51-$73 per guest. While many couples spend significantly less than this due to banquet-style dinners, the average spend is around $60 per adult guest.The food served at a wedding reception is determined by the time of the wedding and local custom.hile many couples spend significantly less than this due to banquet-style dinners, the average spend is around $60 per adult guest. The food served at a wedding reception is determined by the time of the wedding and local custom.
1 Simple buffet type style caterer that include meals such as beef and chicken can cost $30 to $55 per plate. 2  A higher end dinner that includes fancier dishes such as a filet mignon, etc., can fetch prices ranging from $60 to $95 per plate. This type of setup can cost anywhere from $140 to $285 per person. 2  Tips may be expected for bartenders and the waitstaff serving the food. 3  They may recommend a 15% to 25% tip, and this should be provided by the person paying for the wedding, not the guests themselves.