Just updated the script:

Now the Save and Ok buttons work, sorry about that, I never realized I was using an undeclared variable to hold the color for the drawrects and drawtexts.

Now the sliders are taller than the triangles and changed the color of them to a much more noticeable one.

As well as a few modifications to help it run smoother.

I didn't upload a new screenshot, although, it looks almost exactly the same, except the sliders are darker and a little longer.