As the translations are mostly done by the community, errors will likely occur. I only handle the Dutch language so I can't do much about it. But it might be for the best if it is reported somewhere for the translators to fix them
@agusputra That happens because of some language keys are used in the ACP, nothing to worry about, we can replace them with the hardcoded english ones until the ACP is fully translated.
@dcook The color you want to change is not property of the categories, but rather the property of the theme. Black is the theme color for section categories (non-clickable link) and blue is the theme color for non-section/normal categories (clickable link).
That's why there is no option to customize it on categories management.