Hi, As part of an overall dark mode for Dillo, we could also consider the tooltips. Here is an example which I think looks reasonable: --- a/src/tipwin.cc Sun Aug 11 22:21:59 2024 +++ b/src/tipwin.cc Sat Aug 24 22:17:21 2024 @@ -40,7 +40,7 @@ static void recent_timeout(void*); */ TipWin::TipWin() : Fl_Menu_Window(1, 1) // will autosize { - bgcolor = fl_color_cube(FL_NUM_RED - 1, FL_NUM_GREEN - 1, FL_NUM_BLUE - 2); + bgcolor = FL_WHITE; recent = 0; tip[0] = '\0'; cur_widget = NULL; @@ -50,8 +50,8 @@ TipWin::TipWin() : Fl_Menu_Window(1, 1) // will au void TipWin::draw() { - draw_box(FL_BORDER_BOX, 0, 0, w(), h(), bgcolor); - fl_color(FL_BLACK); + draw_box(FL_BORDER_FRAME, 0, 0, w(), h(), bgcolor); + fl_color(FL_WHITE); fl_font(labelfont(), labelsize()); fl_draw(tip, 3, 3, w() - 6, h() - 6, //Fl_Align(FL_ALIGN_LEFT | FL_ALIGN_WRAP)); Note that 'ui_main_bg_color' needs to be set to the desired dark color first. Regards, Alex