Here's the existing ICONS which will work for both LIGHT and DARK interfaces. You can colorize them however you like in Icon Builder. See below for exceptions*

*Not sure how to replace the Copy, Paste and History Icons...Michael?
*The Dark icons at the bottom are base64 encoded directly in the htm file. Perhaps the htm file can be modified to look first for an icon name and if it doesn't find it use the base 64 encoded version? Max?

Icons for Light Backgrounds:
https://altuit.cloud/web/dbpub/MoIGUIdownloads/IconsForLightBgs.zip

Icons for Dark Backgrounds: (Like above)
https://altuit.cloud/web/dbpub/MoIGUIdownloads/IconsForDarkBgs.zip

Remember, put these in your moi_icons folder in MGB. It will use these to build out the full set (minus what you see above). Then save to your icons folder in moi/ui/icons
(please back up!)