md-datepicker border-bottom not the same as md-input border-bottom

[wallzero]

md-input border-bottom seems to use RGB(#, #, #, 0.12) on unactivated inputs while md-datepicker's div used a different hue color RBG(#, #, #) with no opacity adjustment. If you inspect the demo here you can see the difference: https://material.angularjs.org/1.0.7/demo/input

This is causing problems for forms and different colors. The borders don't match. md-datepicker should use the same hue and opacity as md-input.

[ThomasBurleson]

Related to #7772

[BevanR]

Does this screenshot from https://material.angularjs.org/HEAD/demo/input capture the issue?

[devversion]

@BevanR PR, which fixes that issue is already pending. But thanks for the screenshot.

[BevanR]

No problem @devversion! 😄 I wanted to check I understood the bug properly before reviewing the PR.