[BUG] icon template color for service ignored

[BenDavidson90]

PROBLEM DESCRIPTION

A clear and concise description of what the problem is.
I tried to configure this entity:

- entity: service.rest_command.oklyn_pump_off
  name: "Off"
  icon: mdi:fan
  color: '{{iif(states("binary_sensor.test")=="on", "[0,255,0]", "[255,165,255]")}}'

It doesn't work, the color stay the default one.
But if I replace service.rest_command.oklyn_pump_off by light.some_lamp, it works and the color changes.
It's a little like #586

REQUESTED INFORMATION

Make sure your have performed every step and checked the applicable boxes before submitting your issue. Thank you!

• Provide your apps.yaml (or your config):

  apps.yaml here:
Code above

• Go to Settings>Add-ons>AppDaemon>Log (or the output of your TS script) and then, provide the output of the log during your issue/bug occurs:

  Log output here:
None

TO REPRODUCE

Steps to reproduce the behavior:
Code above

EXPECTED BEHAVIOUR

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Icon should change color according to the template

SCREENSHOTS

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ADDITIONAL CONTEXT

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Please note here in case you are using ioBroker

PANEL / FIRMWARE VERSION

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EU