Help with Arcade Expression for text Colour in popup

[aam]

I have the following arcade expression that returns value based on conditions set. I want to modify this expression so that if Eligible I want to show the return message in Green. And if not eligible I would like the message to be in Red.

How can I do that?

if ($feature.Eligibility == 'Eligible'){
    return 'Please Fill out the required information'
}

else if ($feature.Eligibility == 'Not Eligible'){
    return $feature.TrafficStudyStatus
}

[SteveCole · Accepted solution]

Take a look at this ESRI Blog Post.

[aam]

Thank you!

[aam]

I actually have one more question. How can I make this expression in a way that the last condition does not show anything in the popup. I've tried using return none and NULL but its not working.

if ($feature.TrafficStudyStatus == 'Not a Town Owned Road'){
    return '#ffa77f'
}

else if ($feature.TrafficStudyStatus == 'Study Initiated'){
    return '#0070ff'
}

else if ($feature.TrafficStudyStatus == 'Non-Physical Measures to be Implemented'){
    return '#9e559c'
}

else if ($feature.TrafficStudyStatus == 'Eligible for Traffic Calming Request'){
    return NULL
}

[aam]

Sorry never mind I figured it out.