Is it possible to drag a rectangle to fit my template? I already have bleed markers in a layer for guides, but I want the general background to look a color other than white.
Hmeasurements in the Control Panel across the top of the screen
Hmeasurements you noted from the artboard
Align to Artboard
Center Verticalbuttons on the Align Panel.
That will create a rectangle the same size as the artboard then align it to the artboard.As far as I'm aware, this the best you'll get. There's no automated method to create a rectangle at the artboard bounds.
or use this script that draws a rectangle on the active artboard
var idoc = app.activeDocument; var r = idoc.artboards[idoc.artboards.getActiveArtboardIndex()].artboardRect; idoc.pathItems.rectangle(r, r, r-r, r-r);