Visible Full Bridge Retifier

Alright, new to the game, long time application engineer, never concerned with the details. Alright so forgive my ignorance. I have a led full bridge retifier. Red leds for the neg, green for the positive, yellow for the load. It's like a christmas tree. I'd like to slow down the 60 cycle and watch the reds cycle on/off and then the greens cycle on/off and so forth. Or at least simulate the slowing of the 60 cycle to produce dc. Has anyone done this before? Is there a schematic available? Looking for a visible verification that this is the way the bridge works besides using a scope. And hopefully I can find this thread again. Thanks