1. A display apparatus for forming, on a display surface, a color image including a plurality of superimposed color images, the display apparatus comprising: (a) a first color modulation channel for forming a first color two-dimensional image, comprising: (a1) a laser light source for providing a first color source beam; (a2) a linear spatial light modulator for modulating said first color source beam to provide a modulated light beam having a first color; (a3) a scanning element for scanning said modulated light beam having said first color to form said first color two-dimensional image; (b) a second color modulation channel for forming a second color two-dimensional image, comprising: (b1) an incoherent light source for providing a second color source beam; (b2) an area spatial light modulator for modulating said second color source beam to form a second color two-dimensional image; and (c) at least one projection lens for projecting, toward the display surface, the color image comprising said first color two-dimensional image combined with said second color two-dimensional image.