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.
You & Your Wedding survey reveals the average cost of a wedding is over Â£20,500. 50% of brides expect to go over budget to get the day of their dreams. 1  59% of brides do the bulk of their wedding planning alone. 2  20% borrow money to fund their big day.3  Only 22% prepared to cut budget due to economic climate.nly 22% of the brides surveyed were prepared to cut their budget due to the economic climate. The average cost of a wedding in 2014 was Â£20,983, down from Â£21,939 (4.5%) in 2012, but up almost 5% from 2009 (Â£20,020).