Change color of DropDownList based on values n ASP.Net

Please refer below code.

HTML

<div>
    <asp:DropDownList ID="ddlNames" runat="server">
    </asp:DropDownList>
</div>

 C#

protected void Page_Load(object sender, EventArgs e)
{
    if (!this.IsPostBack)
    {
        DataTable dt = new DataTable();
        dt.Columns.Add("id");
        dt.Columns.Add("name");
        dt.Rows.Add(1, "David");
        dt.Rows.Add(2, "Kevin");
        ddlNames.DataSource = dt;
        ddlNames.DataTextField = "name";
        ddlNames.DataValueField = "id";
        ddlNames.DataBind();
    }
    for (int i = 0; i < ddlNames.Items.Count; i++)
    {
        if (ddlNames.Items[i].Text == "David")
        {
            ddlNames.Items[i].Attributes.CssStyle.Add("color", "Blue");
        }
        if (ddlNames.Items[i].Text == "Kevin")
        {
            ddlNames.Items[i].Attributes.CssStyle.Add("color", "Black");
        }
    }
}

I hope this will help you out.