Controlling RGB behavior on sleep mode?

[Kensu]

Hi, not sure if this is the right place to post this. I am building a custom case using an RGB button.

My problem is that I want the power LED to blink while in sleep mode, but I still want the button to be RGB controllable. 

This is the button I am using: https://www.adafruit.com/product/3425 (I accidentally ordered the latching version but as long as I don't bottom the button out it doesn't stick). 

 

It has 6 terminals on the button: Red LED, Green LED, Blue LED, Positive (power in), Normal On (switch while in on state), Normal Off (connect when pressed), and Common.

 

The problem I am having is that the lights turn on when connected to a circuit. Doesn't sound like a big deal, but the problem I am having is that I need to maintain the RGB control while still having it blink in sleep mode. For the blinking to work, the power for the light needs to be connected to the PLED- terminal on the front panel header. For the RGB to work, I need the light to be connected to the RGB color terminal. Those never go off and don't have behavior while in sleep mode.

 

I am using the ASrock Phantom Gaming itx / tb3 motherboard. Not really sure where to go from here. Can anyone help me with this?