Button should always be bold (14pt Roboto medium)

[rene-lindner-isw]

Description

According to MD an button should be 14pt Roboto medium, medium should be font-weight: 500.

https://material.io/guidelines/components/buttons.html#buttons-style

Since most buttons should be in the accent color, and most accent colors to not have an optimal contrast to white, this difference to MD leads to unreadable paper-buttons.

I know this can be easy fixed for a single app via the --paper-button mixin, but shouldn't the paper-button implement an MD button?

Maybe linked to #94, #95, #111, #129.

I am aware that the bold is used for focus, but again, shouldn't the paper-button implement an MD button? Special a11y requirements that differs from strict MD can be simpy solved via the mixins.

And it's not very usefull if i can clearly see that a button is focused, if i can't read the unfocused button.

Expected outcome

Button should always have font-weight 500.

Actual outcome

Button does only have font-weight on focus.

Live Demo

https://www.webcomponents.org/element/PolymerElements/paper-button/demo/demo/index.html

Browsers Affected

Browser independent.