Change stackblitz theme to indigo-pink (#755)
Change stackblitz theme to indigo-pink (#755)

I don't remember why this was deeppurple-amber, but I think the StackBlitz theme should be the same as the default site theme.
andrewseguin/material.angular.io,crisbeto/material.angular.io,andrewseguin/material.angular.io,crisbeto/material.angular.io,crisbeto/material.angular.io,andrewseguin/material.angular.io,angular/material.angular.io,angular/material.angular.io,angular/material.angular.io,angular/material.angular.io,crisbeto/material.angular.io,andrewseguin/material.angular.io