CssVariableThemeProvider class   
CssVariableThemeProvider loads themes from json. Writes json themes into the dom as css variables. It can return the theme object to consumers
Method Details
		enableThemeGlobally(string)
	  
	function enableThemeGlobally(themeName: string)
				Parameters
- themeName
 - 
				
string
 
		provideTheme(ThemeConfiguration, ThemeProviderOptions)
	    
	function provideTheme(theme: ThemeConfiguration, options?: ThemeProviderOptions)
				Parameters
- theme
 - ThemeConfiguration
 
- options
 - ThemeProviderOptions