coconut breaking in Hindu temples as can be seen from the above video was once really the breaking open of human head skull at a time when human sacrifice was still in vogue amongst Hindus.You said that it along with animal sacrifice was done away with and was replaced by symbolic sacrifices/offerings of coconuts,fruits etc mainly due to the influence of philosophies of Buddhism and Jainism
viewtopic.php?f=55&t=16393&p=215280&hilit=coconut#p215280
https://www.youtube.com/watch?v=KnGIGQW6oRg
So going by such interpretation,does it mean that pouring the valuable red kum kum flower solution on the idol(shown in the above video) as on today in a great majority of Hindu temples actually implied pouring the valuable blood of a human sacrifice victim in antiquity per anthropology?