Dynamic text color for button

I am having a heck of a time trying to get the text color of the button to dynamically change based on a database event.

<button id="btn1" class="btn" type="submit" dmx-style:color="#listing_info.data.listing_info[0].submit_button_text_color">

No matter what i choose, it doesn’t change the text color of the button. I can even put in a static color to just test it and it stays the same as the default text of black.

Any thing you can think of that could cause this?