I redid the whole design from scratch. And used Overloaded's name, Aqua.

Here's a (hopefully) usable beta.
http://tinyurl.com/ak8q2zAuqa.set goes in the Mach3 folder.
.png's need to go in \Mach3\bitmaps\Aqua\
For the spindle override LED to work correctly:
Spindle OR LED.brn needs to go in \Mach3\brains\
Under the Operator menu, go to Brain Control and enable it.
This is the only way I could think of to get it to work like the FRO does.
Note: Occasionally, I've the reset spindle LED lit when starting mach3, but no spindle OR applied. If you move the slider and reset, it sems to work fine after that. I'll look into this further down the road.
Most things work, but not the tool change position buttons.
Let me know if there are any problems, or if there are any suggestions.