diff --git a/sys/dev/syscons/teken/sequences b/sys/dev/syscons/teken/sequences
index eb5a9fef54f..99aa226ab97 100644
--- a/sys/dev/syscons/teken/sequences
+++ b/sys/dev/syscons/teken/sequences
@@ -100,6 +100,8 @@ TBC	Tab Clear				^[ [ g		r
 VPA	Vertical Position Absolute		^[ [ d		n
 
 # Cons25 compatibility sequences
+C25ADBG	Cons25 set adapter background		^[ [ = G	r
+C25ADFG	Cons25 set adapter foreground		^[ [ = F	r
 C25CURS	Cons25 set cursor type			^[ [ = S	r
 C25VTSW	Cons25 switch virtual terminal		^[ [ z		r
 
diff --git a/sys/dev/syscons/teken/teken_subr_compat.h b/sys/dev/syscons/teken/teken_subr_compat.h
index 5378bb0a966..dea30d3e801 100644
--- a/sys/dev/syscons/teken/teken_subr_compat.h
+++ b/sys/dev/syscons/teken/teken_subr_compat.h
@@ -33,6 +33,29 @@ teken_subr_cons25_set_cursor_type(teken_t *t, unsigned int type)
 	teken_funcs_param(t, TP_SHOWCURSOR, type != 1);
 }
 
+static void
+teken_subr_cons25_set_adapter_background(teken_t *t, unsigned int c)
+{
+
+	t->t_defattr.ta_bgcolor = c % 8;
+	t->t_curattr.ta_bgcolor = c % 8;
+}
+
+static void
+teken_subr_cons25_set_adapter_foreground(teken_t *t, unsigned int c)
+{
+
+	t->t_defattr.ta_fgcolor = c % 8;
+	t->t_curattr.ta_fgcolor = c % 8;
+	if (c >= 8) {
+		t->t_defattr.ta_format |= TF_BOLD;
+		t->t_curattr.ta_format |= TF_BOLD;
+	} else {
+		t->t_defattr.ta_format &= ~TF_BOLD;
+		t->t_curattr.ta_format &= ~TF_BOLD;
+	}
+}
+
 static void
 teken_subr_cons25_switch_virtual_terminal(teken_t *t, unsigned int vt)
 {