Hello, I believe this page should help you https://openmeetings.apache.org/themes-and-branding.html :)
On Wed, 20 Mar 2019 at 18:18, Juan Antonio Moreno Carmona <jam...@gmail.com> wrote: > Hi. > > I have installed openmeetings 4.0.8 and all goes well, but I would like > to change some default values. What files do I need to edit to get > default color value to something different to #ff6600 and default stroke > width to 2 in the tools bar of the whiteboard? > > -- WBR Maxim aka solomax