A light section, where the header reads dark-on-light.
A dark section carrying a watched id, so the header flips to light-on-dark while it is behind it.
Light again, and the header flips back.
A light section, where the header reads dark-on-light.
A dark section carrying a watched id, so the header flips to light-on-dark while it is behind it.
Light again, and the header flips back.