Disabled text colors do not match for mat-select and mat-input

[dixy]

Bug, feature request, or proposal:

Disabled text colors do not match for mat-select and mat-input components.

What is the expected behavior?

Same disabled colors.

What is the current behavior?

Colors are different.

What are the steps to reproduce?

Put mat-select and mat-input together in a disabled state:
http://plnkr.co/edit/LECvY5QY3zOuwtr4YEI0?p=preview

What is the use-case or motivation for changing an existing behavior?

Difference visible when mat-select and mat-input are used together in a form.

Which versions of Angular, Material, OS, TypeScript, browsers are affected?

Angular 4.4.4 and material 2.0.0-beta.12.

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