How to set color to a tableview values from the database

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C++

QT

Log cnn;
QSqlQueryModel *modal=new QSqlQueryModel();
QSqlQuery *qry=new QSqlQuery(cnn.mydb);
qry->prepare("select *from AccessLog");
qry->exec();
modal->setQuery(*qry);
ui->tableView->setModel(modal);
qDebug()<<(modal->rowCount());

With this method i can set a QSQlQueryModels to my QTableviews.How i can set color to each row in tableview.