Based on height version. It adds Section insertion such as:

SectionOptions: {
label: "Options",
type: "section"
}

Insert the code before a new section of options.

And you can easily add your own CSS style to your config such as:

var settings = {
PlayerType: {
label: "Player Type",
type: "radio",     // 'checkbox', 'number', 'text', 'textarea', 'radio', 'section', 'select'
default: "html",
options: {
html: "HTML (force)",
flash: "FLASH (or auto)"
}
}
}
var configStyle = 'fieldset>.radio{display:inline-block !important;padding-left:15px !important}\
.radio+.radio{margin-left:20px !important}';
GM_config.init('Dailymotion Custom Player',settings,configStyle);