This modification is a 3rd variation where in additon to adding the date (dd-mm-yy) to the time (hh:mm:ss), I also applied a factor (and then rounded to whole # before convering to hex) each channel of RGB, then mapped the RGB to hex pairs (ie 0-255 -> 00-FF). This uses the full specturm of colors available (#000000-#FFFFFF), rather than the limited ranges of 00-54 ([0-31]+[0-23]), 00-71, & 00-158 that otherwise limit the colors shown. Also this increase the noticablity of the color shift every second as the difference between colors is increased.
Links to my variations (and the original I based my varitions on):