`Color`-related convenience methods should be more permissive about bevy

[cart]

Rust Analyzer would be fine with it. However there is the problem is that blanket trait impls block other impls for upstream types:

[mintlu8]

I suggest be explicit and provide StandardMaterial::from_color.

[NthTensor]

My suggestion was the following. It's kind of gross looking and idk if it will trip up things like rust analyzer.

impl<C: Into<Color>> From<C> for StandardMaterial
    fn from(color: C) -> StandardMaterial {
        StandardMaterial::from(color.into())
    }
}

[NthTensor]

So either a color space trait or a macro then I guess.