This has already been discussed in #46 and it seemed as if this got resolved. However, it seems as if this is still an issue / reoccurred.

Here's an example when using the colored crate:

use colored::Colorize;
use prettytable::{format, row, Table};

fn main() {
        let mut table = Table::new();

        table.add_row(row![
            "Hello".yellow(),
        ]);

        table.printstd();
}

running this results in the following table:

+---------+
| Hello |
+---------+

you can see at the end the cell is one character too small