Example of creating a dropdown list paramter editor for Umbraco 7

package.manifest

{
	propertyEditors: [
		{
			alias: "ButtonStylePicker",
			name: "Button Style Picker",
			editor: {
				view: "dropdown"
			},
			isParameterEditor: true,
			defaultConfig: {
				"items" : [
					{ id:"grey",	value:"Grey" },
					{ id:"green",	value:"Green" },
					{ id:"orange",	value:"Orange" }
				]
			}
		} 
    	]
}