Creates a theme based on the Material Design System.
Color— The base color for the widgets. See the Material Color System for swatches.
Color Variant— How bright the base color is, ranging from 900 (darkest) to 200 (brightest).
Emphasis— How prominently Action Button appear:
Label Font— The font to use for widgets'
Keywords: group, gui, interact, interface, material design system, palette, user interface