Resources/views/fields/select-theme.blade.php
<div class="form-group">
<label for="{{ $settingName }}">{{ trans($moduleInfo['description']) }}</label>
<select class="form-control" name="{{ $settingName }}" id="{{ $settingName }}">
<?php foreach ($themes as $name => $theme): ?>
<option value="{{ $name }}" {{ isset($dbSettings[$settingName]) && $dbSettings[$settingName]->plainValue == $name ? 'selected' : '' }}>
{{ $theme->getName() }}
</option>
<?php endforeach; ?>
</select>
</div>