Thank you for your answers. I found also that I could use span manually, it was the way SeaMonkey highlighted text with his button, but the button was more useful than doing it manually.
I checked through "about:config" if I can enable that HighlightColorButton, through a editor.toolbars.showbutton set to true... I see all the editors buttons but not the HighlightColorButton. In SeaMonkey 2.10.1 editor, I have that button displayed, but I don't see that button in "about:config" editor.toolbars.showbutton neither (strange because I see all the others buttons)... I thought that I could find the name of that button there and add it back to SeaMonkey 2.11... Finally I installed Amaya editor (http://www.w3.org/Amaya), it has a HighlightColorButton, so I'll use Amaya instead of SeaMonkey. Thanks again. _______________________________________________ support-seamonkey mailing list [email protected] https://lists.mozilla.org/listinfo/support-seamonkey

