The second version of my BannerEditor Enhancer Mod. Adds like double the options of colours and slightly rearranged the positions of the menu so you can properly select all the colours. Might be a bit messy. Also on another note I failed to make this into a separate mod. It just won't override the banner_colours.xml which is assigned for adding new banner colours. Installation Instructions below:
Open the BEE.rar with WinRAR or another program capable of opening it.
Move the Native folder inside into the "/Bannerlord/Modules/" Folder
Replace all files inside.
Do not worry about starting your game and having something with modified module. This is safe-proof and I already tested replacing the files with original files and reloading an already modified save.
What will happen is, that your banner will move to the latest possible ID and it will work itself out.