Changing the color of an Icon of a button card

Configuration
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1

Hi, Please help me with a question that boggles my mind. Im sure it is staring right at me.

How do I change the color of a button card background and icon. Let’s say a light blue background with a yellow icon (regardless the state of the entity)

show_name: true
show_icon: true
type: button
tap_action:
  action: navigate
  navigation_path: /lovelace/7
icon: mdi:dharmachakra
entity: media_player.01b0d729_98179fc5
show_state: false
name: Segway Office
layout_options:
  grid_columns: 2
  grid_rows: 3