Hello!
As a general heads up, please ensure any future requests you submit follow the instructions the staff member Luni posted here: ⭐ Welcome to the User Feedback channel!
Try to keep one thread per request, and provide the details that Luni lists, so people can better assist with/provide guidance/reply to those specific requests.
Normally items that don’t meet these requirements will be closed out, but as this is the first time you’re receiving this guidance, I’ll leave this thread open.
Separately, the Feature Request section of the forum is normally for requesting base engine functionality. Extensions are mostly made by the community, and generally you don’t request the community to build an extension for you.
All of that said, to touch on some of the items in your list
Color Palettes aren’t a thing you need to make an extension for. That’s just storing RGB values in a variable.
Drawing lines, circles, ovals, and arcs are all possible with the Shape Painter object already in the engine. How you use them is up to you.
The “Sprite Snapshot” extension in the main extension list will let you render a layer, scene, or otherwise into a texture, and then use that within the game. By combining this with the shape painter object, then setting up events to paint onto a layer specific for the drawing, you can accomplish what you’re looking for, for the most part.
This request is kind of exceptionally vague, so you’re going to need to add more detail to ensure people understand what you’re looking for.
However, please keep in mind that extensions currently cannot include premade objects, so if someone was able to accomplish something that has some sort of logic involving animation or otherwise, you would still have to build out the event logic to use it, which would likely be near identical to the information above.