MP6: No visual difference between active and disabled state of checkboxes and radio buttons

[TobiasBg]

For the customized checkboxes and radio buttons, there's no visual difference between active and disabled state (disabled attribute in the <input type="checkbox|radio" disabled="disabled" /> HTML), making it impossible to tell the difference between a checkbox/radio button that can be toggled and one that can not be toggled.

I suggest to use a desaturated/semitransparent color for the tick mark/bullet (for cases when the checkbox/radio button is checked), and maybe a light gray as the background color (for both possibilities of checked), similar to how disabled text inputs are handled.

[iammattthomas]

In 26170:

Add a :disabled style for radio inputs and checkboxes. Fixes #26004.

[SergeyBiryukov]

Shouldn't [26170] go to wp-admin.css rather than colors-fresh.css? Doesn't appear to be color-specific.

[johnbillion]

Re-opening as per Sergey's comment.

[iammattthomas]

In 26331:

Make disabled checkboxes and radios slightly less transparent for better visibility on low-contrast screens. Move this rule from colors-fresh to wp-admin as it's not color-specific. Fixes #26004.