How to change font color in this code?

[harimurpi]

i need change color Fully Booked and Still Available

$schedule[0][‘title’] = ($count <= 0) ? ‘Fully Booked’: ‘(’.$count.‘) Still Available’;
$schedule[0][‘color’] = ($count <= 0) ? ‘#de290d’ : ‘#217feb’;
$schedule[0][‘textColor’] = ‘#000000’;
$schedule[0][‘allDay’] = true;