Column Collation in Table

Copy    ->addColumn('name', Varien_Db_Ddl_Table::TYPE_TEXT, 200, array(
        'nullable'  => false,
        'collate'   => 'utf8mb4_unicode_ci' // doesn't work
        ), 'Name')

Copy// lib\Varien\Db\Ddl\Table.php
public function addColumn($name, $type, $size = null, $options = array(), $comment = null)
{
//...
    $this->_columns[$upperName] = array(
        'COLUMN_NAME'       => $name,
        'COLUMN_TYPE'       => $type,
        'COLUMN_POSITION'   => $position,
        'DATA_TYPE'         => $type,
        'DEFAULT'           => $default,
        'NULLABLE'          => $nullable,
        'LENGTH'            => $length,
        'SCALE'             => $scale,
        'PRECISION'         => $precision,
        'UNSIGNED'          => $unsigned,
        'PRIMARY'           => $primary,
        'PRIMARY_POSITION'  => $primaryPosition,
        'IDENTITY'          => $identity,
        'COMMENT'           => $comment
    );
}

// lib\Varien\Db\Adapter\Pdo\Mysql.php
protected function _getColumnDefinition($options, $ddlType = null)
{
//...
    return sprintf('%s%s%s%s%s COMMENT %s %s',
        $cType,
        $cUnsigned ? ' UNSIGNED' : '',
        $cNullable ? ' NULL' : ' NOT NULL',
        $cDefault !== false ? $this->quoteInto(' default ?', $cDefault) : '',
        $cIdentity ? ' auto_increment' : '',
        $this->quote($comment),
        $after ? 'AFTER ' . $this->quoteIdentifier($after) : ''
    );
}

Copy$connection->modifyColumn(
    $installer->getTable('geoname/admin2'),
    'name',
    [
        'type' => Varien_Db_Ddl_Table::TYPE_TEXT,
        'length' => 200,
        'nullable' => false,
        'collate'   => 'utf8mb4_unicode_ci',
        'comment' => 'Name'
    ]
);

Copy    $connection->modifyColumn(
        $installer->getTable('geoname/admin2'),
        'alternate_names',
        'VARCHAR(10000) COLLATE utf8mb4_unicode_ci'
    );