LYNX SAYS: When planning your luncheon dessert parties, be sure to use this season's rich color schemes on your tables and favors and placecards. White with silver, gold. blue, red are tops right now. If you like three color combinations, combi-nations, there's green, white and gold, blue, white and gold, or white, red and green. For an elaborate color scheme use the rich tones of violet, emerald, em-erald, gold, blue and red. This is especially good in a centerpiece. center-piece. Bridge placecards may be made out of paper chrysanthemums chrysanthe-mums in your favorite color with the card tilting out of the flower. The white cards may also be decorated dec-orated with painted flowers, or candy-shaped flowers pasted in the corner. Evergreen, holly, mistletoe, bright berries, pine cones, used alone or with a silver sil-ver ornament such as a bell on the place card are sure to bring delighted murmurs from your bridge guests.