I want to change the color of the marker when I drag my something I want to know where exactly it's on a chart right now as per my gant t theme I'm unable to see anything while dragging
Welcome to our forum and thanks for contacting us with your question!
Unfortunately, I don't quite understand what you want to achieve. Could you prepare a simple demo (e.g. in jsfiddle) or a simple drawing in which you would present the case?
I'm waiting for a response and feel free to ask any further questions!
Best regards