I have posted articles on how the rays of the Sun touch the Idol in the sanctum, the shadow of the Idol is present all day, the list is long.

There is an ancient temple near Myiladuthurai, where The Lord Shiva‘s Idol changes its colors five times a day coinciding with the Kala Pooja, the poojas conducted at fixed hours daily.

Located near Valangaiman/Papanasam near Mayuram,Kalyanasundareswarars?Pancha Varneswarar temple,The Self born idol of Lord Shiva changes colors Five times a Day during the day.

Another unique feature is that there are two Shiv Lingas in the sanctum

The devotees are Blessed with the ‘Satari‘, A Vaishnava Practice, as this is the place where Lord Shiva Saint Thirunavukkarasar had the Darshan of the Lord’s feet.

Moolavar....https://ramanisblog.in/2014/02/26/temple-where-shiva-changes-colors-five-times-a-day/