ThinkorSwim TA and More

[Bacon-eggs]

Chart Background color questions?
I have seen charts and code that paints a charts background color
one color when one mov. avg. is higher than another avg. etc.

But what I was wondering is:
Can you control where on the charts background it is painted?

Like can you paint like the lower 20% of the chart background or the upper 20% or the middle of the chart or what you want to paint the background?

If you can, how do you do that with a sample code?

Maybe like paint the lower 20% of the charts background blue when Mov. avg. X is higher than Mov. avg. Y or what ever.

Any ideas about this would be helpful.

Thanks,