Button docs example differs from specification

[kiwikern]

Bug, feature request, or proposal:

Docs bug

What is the expected behavior?

Per specification, FABs should have the accent color if no color attribute is given. Embedded example in the docs shows the Basic FAB in white.
Buttons example should look the same in stackblitz and the embedded docs version.

What is the current behavior?

• On stackblitz: FAB button without a color attribute is in the accent color as specified.
  
• In docs: FAB button without a color attribute has no background. (Basic).
  

[ravishivt]

Same issue for my local project. My fab buttons have no color attribute and in non-prod builds, the buttons are correctly styled with accent palette. But during angular-cli production builds, the fab buttons have no default color.

[devversion]

I'm looking into this. It looks like something in the production pipeline of the Angular CLI removes some necessary code (looks like the build-optimizer in combination with uglify)

with build-optimizer disabled

_with build-optimizer enabled

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