buttonsizer->Add( new wxButton(this, wxID_ADD_CUSTOM, _("Add to custom colours") ), 0, wxLEFT|wxRIGHT, 10 );
topsizer->Add( buttonsizer, 0, wxCENTRE | wxALL, 10 );
buttonsizer->Add( new wxButton(this, wxID_ADD_CUSTOM, _("Add to custom colours") ), 0, wxLEFT|wxRIGHT, 10 );
topsizer->Add( buttonsizer, 0, wxCENTRE | wxALL, 10 );