Predefined Colors

[Geams]

Currently, the color constants defined in bevy::render::color::Color are not fully based on CSS Color Module Level 3 but somewhere in between section 4.1. Basic color keywords and section 4.3. Extended color keywords.
It could also be useful having the names available for the color constants, e.g. to display a tooltip with selecting from a color palette.

[DJMcNab]

The colours were originally added in #859, and it's unclear why the author chose the set they did. Yeah, it's definitely on the todo list to update them to a full set.

I'm unclear what your second request is asking for. Is it a HashMap<String, Color>? That could be useful, although at that point I'd expect it to be provided by an external crate.

If not, #4387 might have already implemented what you wanted - the result is visible here http://dev-docs.bevyengine.org/bevy/prelude/enum.Color.html#impl.

[Geams]

Providing names with predefined colors is probably not really needed.
I simply use the bevy::core::Name component with a custom bundle to display a tooltip.
That way, the user could also define own color names.

#[derive(Bundle)]
pub struct ColorBtnBundle{
    pub name: Name,
    #[bundle]
    pub button: ButtonBundle,
}