Add default colors to primitives

[TiagoCavalcante]

Default colors may be always white or have a color scheme like ListLinePlot3D in Symja.

I believe that the default colors should be always white as default color schemes may vary between frontends and primitives are white a good percentage of the time.

@rocky your thoughts?

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Color scheme reference links:

• https://github.com/axkr/symja_android_library/blob/master/symja_android_library/matheclipse-core/src/main/java/org/matheclipse/core/builtin/GraphicsFunctions.java#L36-L52
• https://analyticphysics.com/Coding%20Methods/Reverse%20Engineering%20Mathematica%20Colormaps.htm

[TiagoCavalcante]

Implemented in PR #75.