More calendar colors

Hello there, new user here!

I have set up my calendar, which is the app I'm interested the most in. I use exactly 10 calendars + a couple of shared ones. The 10 main calendars are always active and visible in the calendar. Unfortunately there are only 8 available colors, brown/black included. I wonder if it's planned to add more colors in the future, or to allow the user to enter a custom color manually.

Thanks!