Want your duties shown as text only on the calendar, without a background color?
Settings > Screen > Duty view
What is Text Color Mode?
You can display each duty's text using either its [Background Color] or its [Text Color].
1. Background Color 
The duty's background color
Calendar > shown in the background color
2. Text Color
The duty's text color
Calendar > shown in the text color
Vibrant colors are the easiest for your group members to see! 