How to change terminal cursor shape and color

For gnome-terminal:
Profile Preference | Cursor Shape (Prefer no blinking block)
Then:
Add "echo -ne '\e]12;#ff0000\a'" to change the color to red

To disable cursor blinking:
gsettings set org.gnome.Terminal.Legacy.Profile:/org/gnome/terminal/legacy/profiles:/:$(gsettings get org.gnome.Terminal.ProfilesList default|tr -d \')/ cursor-blink-mode off

To disable Ubuntu Cinnemon cursor blinking:
System settings | Keyboard Turn off text cursor blinks

For Putty:
Window | Appearance | Cursor Appearance: to change shape
Window | Colors | Cursor Color: to change the color  

For Google Docs:

See: https://liangzou.blogspot.com/2018/10/stop-cursor-blinking.html