I have this macro and seems like the option to set a custom color by adding say 5882FA is not available.

The "Define Custom Colors" is shaded out.

Thank you for the latest improvements to this.  
It would be very helpful if there was a way to change the font color from black to white, when one selects the section color to be black.  Otherwise, the entire section heading is black, along with the font colors.  In other words, it is impossible to read the words of the section heading when one chooses black as a section heading color.  Is there a way to make the font color white when black or another very dark color is selected?  

Thank you in advance,

Ben Dupre

Every time I use this to change the section color, it changes back to a random default color. If I change two sections to the same color they will randomly change to different default colors.

Sorry just saw that exists already

This is great! Would love to be able to expand the notebook palette as well.

Trisha CM: There is no way to change the font color.

So is there a way to change the font colour?

Brooklynnbank: I am  not sure what color you are referring to by "the one onenote uses"

actually can you edit the dark purple to the one onenote uses. the color used is so bright that the text cannot be read. the font color used can be read on the rest of the dark colors

For the darker colors like dark purple and dark teal is there a way to change the section tab's font to white? so it can still be read

This macro is updated to display 25 predefined colors in addition to the ability to use color codes.

Tmm: Perhaps changing this to something like the color drop down in Search & Highlight would be good enough?

I wish there was a way to add these section colors to the menu. It is a great feature but having to look up a color code each time is time consuming. Also if I open up the Set Section Color Macro and then open up the color codes it basically freezes my onenote. I have to open the task menu and close it (I have uninstalled and reinstalled to see if that was the issue). If I already have the code for the color and then open the set section color it works correctly.

how do i use this macro? i have onetastic installed and i double clicked the addon installer file and no errors showed up but i can't find it anywhere from within onenote.

I like dark pages but that makes the tabs etc unreadable.
I can set the page font to white, but is there a way to set the tab text to white or a lighter color?

Works great on desktop app, but the mobile app (Android in my case) seems to pull the custom color into the the whole page color

The section color seems to be resetted to the original color after syncing.