They are quite pixelated as all diagonals and curves have staircase effects so are quite low resolution raster fonts only at small font sizes do they look nice and I think calling them Christmas Fonts is somewhat a stretch with the vast majority of them. On the plus side the low resolution does mean they are small font size files.

[@SOS] fonts are always only monochrome (black and white) it is up to the program rendering them to apply colours and other effects to the basic fonts font files provide NO WAY to produce different coloured areas. To do that you’d have to render each letter as an individual PNG and you manually place them using a graphics program but they are NOT font files and cannot be used in text editors or as text within programs.