Show Batt low on Lovelace House Map

[Olivier1974 (Olivier Toussaint)]

Doesn’t seem possible, you’ll have to create a template sensor based on the real one and do a customisation of the icon there

Picture Elements Card conditional

I’m also pretty interested in this to show in red on a floor plan rooms that have poor air quality. So far I didn’t find a solution unless I develop a custom element for this. https://www.reddit.com/r/homeassistant/comments/drt84n/picture_elements_card_control_over_css_based_on/ hints towards an ugly workaround that I don’t quite understand yet and is unlikely to work for me.