set_color(COLOR) (and some other methods mostly used for manipulating the size, position etc. of objects on canvas) dont change the attributes associated with the object.

I don’t know if this is intentional but the setting methods especially those used for manipulating the position/color of objects on manim canvas don’t actually change these attributes. For example, here I am trying to change the color of the TextMobject using set_color() but it is not changing the color property associated with the object although its appearance on the canvas has been changed to the desired color.

class Testing(Scene):
    def construct(self):
        some_text = TextMobject("This is some text")
        print("Color of the variable before applying set_color(): ",some_text.color)
        self.play(Write(some_text))
        self.wait()
        self.remove(some_text)
        some_text.set_color(GREEN_D)
        print("Color of the variable after applying set_color(): ",some_text.color)
        self.play(ShowCreation(some_text))
        self.wait()

Here is the output:

[Ammar34]

@Ammar34 would you be interested in opening a PR for this? 😃

Yes sir. I was a little busy for the past two weeks. I will PR tomorrow if that is okay!

[Ammar34]

The vectorized M object class has its own set_color(COLOR) method defined where the COLOR passed is not set to the color attribute of the object. Looking at the method resolution order, TextMobject looks for the method set_color(COLOR) in VMobject.

https://github.com/ManimCommunity/manim/blob/70c0d53a01ee6cd1da9a74c0338ed404f67b9123/manim/mobject/types/vectorized_mobject.py#L227-L230