Where should we add the "theme" and "color_scheme" ?

[yuxineverforever]

When I open the Preference->Package Setting->Package Control->Setting User,

a file named Package Control.sublime-settings opens, the content is listed below:

{
    "bootstrapped": true
}

So, where should we add the theme and color_scheme? ( I have added in these two ways. However, when i reopen the sublime text, nothing changes and my modification disappear.

{
    "bootstrapped": true,
        "theme":...
        "color_scheme":....
}

{
    "bootstrapped": true,
}
{
         "theme":...,
        "color_scheme":....
}

)

[yuxineverforever]

I see, thanks for reminding