The program allows me to customize most of the UI, however the Command bar which displays what players type into the game has a beige brown border. Which it will not allow me to seemingly change. Is there an option for altering it, or a way to remove the coloured border in the script?

It is not easy, and I do not think it is possible with the on-line editor. Look at the last post on this thread:

http://textadventures.co.uk/forum/quest/topic/zyzoxuh9fk2kgjn6fa0ynq/questions-gui-customization-ie-picture-frame-location-side-panel-background

It is possible as I have hidden pretty much everything but the description. All you see in my games is the description and then a flashing cursor below; no command box, no border.

As TP says it's just a case of hiding the elements you want with CSS and then calling it using a script. You only really need to (re)call it if your game has any clear screens or for when the player resumes from a save.

I'll see if I can find the thread as it was Jay who walked me through it.

That was difficult, as Alex has very kindly decided to deny us yet another basic forum function - the ability to search our own posts.

However I eventually found it. Try this: http://textadventures.co.uk/forum/quest/topic/5754/initinterface-help-required

Incidently, the 'bug' I talk about in my first post there, about the CSS not being recalled on resumption of a save, has reportedly been fixed (although I've not tested it yet).

What specifically am I to take from all that? I have read it through but it is difficult to follow what the cumulative solution is from it all as there is some troubleshooting and back-to-forth.

This border is really irritating. It has its own gaudy independent style that conflicts with everything; and pretty much screams what program the game was made on.

Go into full code view (press F9), you can add an attribute to the XML of the game object that includes CSS.

    <css><![CDATA[
      <style>
        #txtCommand {
          outline:none;
          border: none;
        }
      </style>
    ]]></css>

Paste it in below this line:

    <firstpublished>2016</firstpublished>

You can output that in game.start, and it will affect the selected item.

JS.addText (game.css)

http://textadventures.co.uk/forum/samples/topic/5283/window-pane-color-solved#p37260

Check out this thread too. Hagane Steel and Jon created a black border UI. ^_^