does anybody need this one?

I don't know, wheather anybody needs this one, but here it is: a simple square made with one superscope.
It's not really a preset - it's only a part for further uses. It could be good for colour effects for example.
For all other purposes you can make the same with 4 superscopes. The square stays also square with few points.
Better you look at it yourself.

A square isn't exactly revolutionary.

BTW your colourcoding looks rather bulky and unefficient. If you use:
red=sin(i-t);
blue=cos(i*2+t2);
green=sin(i*4+t);

Instead of your code, you can get almost the exact same effect, and make the colours change.

precision costs speed..

Hungryskull : His method is quite a bit faster...

Still, it doesn't support shifting colors.

I finally figured out how to make the color-shifting.
I only needed one(!) new line and some name replacements,
but almost 30 minutes, 10 grams of paper and 0.5ml ink 😱

good square 🙂 (although it's a rectangle most times because of the aspect *g*)
now make a preset of it 🙂

Here is a real square which is resized every time the window size changes

Hungryskull : His method is quite a bit faster...

Didn't notice that, but it seems overly complex for what it has to do.

somewhere i heard that an FSIN instruction takes 110 cycles...
is that complex enough? 🙂
so remember: sine is evil 😁

Geez that's a lot of work for one sine.

How about making a solid back face culled square that draws in 3d space set by global vars and all you need to input is 3 of the vertices and the normal.. then I *may* be impressed? (This is very possible - i make tons of little prefabs like this, like the analagous pentagons in alien device for instance)

Seriously though, this is nothing new, you should check out what others have done with AVS. There is a lot more to be done than squares. 😉