Backdrop lets you add up to 8 completely adjustable backdrops anywhere on the screen. It was meant to be quick, light, and painless - not a huge 2000 hour project with advanced GUI support and Artificial Intelligence... :P If you want to add features feel free to submit patches - the code is pretty basic and easy to understand.

Features:

backdrop coloring
border coloring
set transparency of background and/or border
unlimited sizing possibilities
frame level and frame strata settings
locking / unlocking so you don't accidentally drag them

Simple way to get 2 red backdrops with green borders with 50% transparency on your screen. I'll write a line describing what each command does to make it crystal clear.

/backdrop enable

Enables all the backdrops (all 8 will show by default)

/backdrop hide all

We don't need all 8, so just hide them all...

/backdrop show 1

/backdrop show 2

... and show backdrops 1 and 2.

/backdrop red 1

/backdrop green 0

/backdrop blue 0

/backdrop alpha .5

Just setting the RGBA values for the background.

/backdrop bred 0

/backdrop bgreen 1

/backdrop bblue 0

/backdrop balpha .5

and finally setting the RGBA values for the border.

Now just move them where ever you'd like, resize them how you wish (SEE BELOW), and then type:

/backdrop lock

Locks all the backdrops so they can't be moved.

So easy a caveman could do it. ;)

If you are confused or need help finding the RGB values for a particular color, I made a converter that makes it real easy. Find it here: http://uui.nathanmx.com/convert/

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COMPLETE LIST OF SLASH COMMANDS:

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/bdp OR /backdrop

The options show | hide take an additional parameter - the frame number to be shown/hidden or "all".

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HOW TO MOVE / RESIZE THE BACKDROPS

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When the backdrops are unlocked: Left click drags them around. Shift-left-click will size the top, shift-right-click will size the bottom. Ctrl-left-click will size the left, crtl-right-click will size the right.