This script plots the current daily, weekly and monthly opens (all enabled by default).
Here are some additional info about the drawing behavior:
Daily open is shown only on intraday timeframes
Weekly open is shown only on timeframes < weekly
Monthly open is shown only on timeframes < monthly
I modify existing scripts about Daily High/Low, Daily Open, Previous Daily Close, etc.
Daily High = red color
Daily Low = green color
Daily Mid = blue color
Daily Open = purple color
Previous Daily Close = black color