Radio Buttons and Check boxes in Customize Controls are disabled

I don't know why the buttons would be disabled, they aren't in my install.

You can try and go to "File undefined Form Elements" and check whether you can customize them from this setting.

Hi Tim, Thanks for your reply. I tried through File preferences - though the normal state is fine, but the selected state is not changing.

Actually those controls are enabled if I choose a new file. However, I am working on an existing content which I have to do responsive. And need to change the look-and-feel of the buttons.

Looking at the options, there are several I would never consider including in an accessible title, largely due to contrasting. For example, if you use the modern green selected/unselected, I highly doubt this would pass the contrast ratio that's standard for accessibility.

Also, using an image for a radio rather than the HTML5 default might throw screen readers off, though I'd have to do more extensive testing/publishing to find out for sure.

Note: I misspoke above. The contrast requirements are WCAG, not 508.

Do you also have Use Web Accessibility Settings checked? This disables the Customize Controls option. On a side note, it also removes all player skins from the choices, which I've added in the Suggestions forum. I'm not sure why this would also be disabled, though for accessibility, it may be based on 508 contrast guidelines.

Thanks a lot Jason. It worked. Great help. Really it is weird. May be something to do with accessibility.