added ability to change color of wireframe

[ljchang]

I wasn't able to find any tutorials for customizing colors of plots.

Most of the matplotlib properties can be easily accessed via the DataGeometry class. However, the wireframe properties are more deeply embedded in the hypertools plotting functions.

This suggested change incorporate cube_kwargs that propagates into the plot_cube() function.

Not sure if this functionality is of interest to anyone else, but thought I would share just in case.

[paxtonfitzpatrick]

Thanks @ljchang, this is a great idea! I expanded on this slightly and made a few minor tweaks:

• forward all cube_kwargs to plot_wireframe instead of just color & linewidth to allow customizing other properties (linestyles, alpha, zorder, etc.) as well
• similarly propagate cube_kwargs into plot_square() to allow customizing the square drawn around 2D plots (kwargs get forwarded to matplotlib.patches.Rectangle() in this case)
• rename cube_kwargs ➡️ frame_kwargs so it more generally refers to the "frame" drawn around either a 2D or 3D plot
• add frame_kwargs to values stored in the returned DataGeometry object so that its plot() method reproduces the original plot with no additional arguments.
• minor bug fix to handle not passing frame_kwargs

Merging this in!