To check if the LED strip and power supply work, directly connect your power supply's +12V to the +12V pin of the strip and power supply's ground to each R,G,B pin one at a time to see if they ...

Bucking the downward trend [HansLuijten] provides an astoundingly thorough set of LED strip patterns in his comprehensive post titled Arduino LED strip effects.

All are held in place by a ring of hardware with spacers in them, and the RGB LED strip that is used to display time and date wraps around those spacers.