Green¶

Status: Experimental

present and registered, but lightly documented and not yet covered by dedicated tests.

Description¶

Green

The named colour RGBColor[0, 1, 0].

Examples (3)¶

Every input below was run against the current Mathilda build and its output recorded.

Applications (3)¶

The named primary evaluates straight to its RGBColor literal

In[1]:= Green
Out[1]= RGBColor[0, 1, 0]

An OwnValue, not an inert head -- it has already resolved

In[2]:= FullForm[Green]
Out[2]= RGBColor[0, 1, 0]

Usable wherever a directive is

In[3]:= Head[Graphics[{Green, Line[{{0, 0}, {1, 1}}]}]]
Out[3]= Graphics

Implementation notes¶

Definition. Green is one of Mathilda's named colour constants, bound as an OwnValue rather than registered as an inert head: register_color("Green", rgb_color(0, 1, 0)) in graphics_init (src/graphics/graphics_init.c) makes the bare symbol Green evaluate to the literal RGBColor[0, 1, 0] and marks it Protected. The docstring lives centrally in src/info.c (set in info_init, which runs first).

Representation. Green evaluates to RGBColor[0, 1, 0], so FullForm[Green] is RGBColor[0, 1, 0] and Head[Green] is RGBColor. The color_component helper emits an exact 0/1 as an integer and anything else as a real, matching Mathematica's InputForm. Green is one of the saturated primaries built with RGBColor (the greyscale names use GrayLevel).

Usage & limits. As a resolved colour literal it is accepted anywhere a directive is — Graphics[{Green, Line[...]}], PlotStyle -> Green, Directive[Green, Dashed]. Plot evaluates its option values once before storing them, so a held option like Epilog -> Green also sees RGBColor[0, 1, 0]. It carries no opacity; use Opacity[a] or the four-argument RGBColor for translucency.

Attributes: Protected.

References¶

Source: src/graphics/graphics_init.c
Specification index: Mathilda_spec.md

Notes & additional examples¶

Notes¶

Green is the named colour RGBColor[0, 1, 0]. It is bound as a Protected OwnValue, so it resolves to a real colour literal wherever a bare argument is evaluated: FullForm[Green] is RGBColor[0, 1, 0] and Head[Green] is RGBColor.

That resolution is what lets it be used anywhere a style directive is accepted — inside Graphics, as a PlotStyle/Epilog value, or in a Directive. The exact-0/1 components print as integers. Green carries no opacity; use Opacity[a] or the four-argument RGBColor[r, g, b, a].