WITH A FLICK OF A SWITCH, GOV. NORM BANGERTER LIT MORE THAN 4,000 WHITE LIGHTS ADORNING A 32-FOOT BLUE SPRUCE CHRISTMAS TREE THIS WEEK, SIGNALING THE START OF THE HOLIDAY SEASON ON CAPITOL HILL. ENHANCING THE TRADITIONAL LIGHTING CELEBRATION WERE THE SUNSHINE GENERATION, RIGHT, A SINGING GROUP OF ORANGE-AND-YELLOW-CLAD CHILDREN. SEVERAL SCHOOL SINGING GROUPS WILL PERFORM PUBLIC CONCERTS BY THE TREE DURING THE CHRISTMAS SEASON. THIS YEAR'S TREE, WHICH STANDS MAJESTICALLY IN THE CAPITOL ROTUNDA, WAS DONATED BY RHODA HANSEN. SHE BOUGHT IT FOR $1.98 IN 1962 AND PLANTED IT IN HER FRONT YARD, WHERE IT GREW QUICKLY. STATE OFFICIALS CHOSE THE TREE FROM SEVERAL OFFERED THIS YEAR BECAUSE OF ITS SIZE AND SHAPE. IN ADDITION TO THE LIGHTS, THE TREE IS DECORATED WITH LARGE ORNAMENTS HAND-CRAFTED BY UTAHNS.