[6.x] text color on disabled buttons with custom color

[helloDanuk]

Bug description

If you change the primary color to 'primary' => Color::Blue[500], for example, you can't read text on disabled buttons very good anymore.

How to reproduce

Changes primary color in cp-config file.

Logs

Environment

6.0.0-alpha.8

Installation

Fresh statamic/statamic site via CLI

Additional details

No response