Google Spreadsheet has in the toolbar under the border button also a button to change the color and change the border style.
How can these be accessed within a Googl
You can do a little trick. Copy the formatting in a coloured border cell to where ever you want.
var ss = SpreadsheetApp.getActiveSpreadsheet();
var source = ss.getSheets()[0];
var destination = ss.getSheets()[1];
var blueBorderRange = source.getRange("B2:D4");
// This copies the formatting in B2:D4 from the source sheet to
// D4:F6 in the second sheet
blueBorderRange.copyFormatToRange(destination, 4, 6, 4, 6);