diff --git a/src/game/chr/chr.c b/src/game/chr/chr.c
index 5ed4d087f..730a35e7f 100644
--- a/src/game/chr/chr.c
+++ b/src/game/chr/chr.c
@@ -5511,7 +5511,7 @@ glabel var7f1a87d8
 /*  f024224:	260400f8 */ 	addiu	$a0,$s0,0xf8
 /*  f024228:	11a00003 */ 	beqz	$t5,.L0f024238
 /*  f02422c:	00000000 */ 	nop
-/*  f024230:	0fc1a5c4 */ 	jal	func0f069710
+/*  f024230:	0fc1a5c4 */ 	jal	colourTween
 /*  f024234:	260500fc */ 	addiu	$a1,$s0,0xfc
 .L0f024238:
 /*  f024238:	0c006a7a */ 	jal	func0001a9e8
diff --git a/src/game/game_097ba0.c b/src/game/game_097ba0.c
index f0d6e7437..2d0b068f7 100644
--- a/src/game/game_097ba0.c
+++ b/src/game/game_097ba0.c
@@ -20653,7 +20653,7 @@ void currentPlayerTickInventory(bool triggeron)
 	} else {
 		u8 shadecol[4];
 		func0f069144(g_Vars.currentplayer->prop, shadecol, player->floorcol);
-		func0f069710(player->gunshadecol, shadecol);
+		colourTween(player->gunshadecol, shadecol);
 	}
 
 	invIncrementHeldTime(handGetWeaponNum(HAND_RIGHT), handGetWeaponNum(HAND_LEFT));
diff --git a/src/game/propobj.c b/src/game/propobj.c
index 26cddfd84..ef441c9bc 100644
--- a/src/game/propobj.c
+++ b/src/game/propobj.c
@@ -3996,26 +3996,21 @@ glabel func0f069630
 /*  f06970c:	00000000 */ 	nop
 );
 
-GLOBAL_ASM(
-glabel func0f069710
-/*  f069710:	00001025 */ 	or	$v0,$zero,$zero
-/*  f069714:	00a03025 */ 	or	$a2,$a1,$zero
-/*  f069718:	00803825 */ 	or	$a3,$a0,$zero
-/*  f06971c:	24080004 */ 	addiu	$t0,$zero,0x4
-.L0f069720:
-/*  f069720:	90e40000 */ 	lbu	$a0,0x0($a3)
-/*  f069724:	90ce0000 */ 	lbu	$t6,0x0($a2)
-/*  f069728:	24420001 */ 	addiu	$v0,$v0,0x1
-/*  f06972c:	24c60001 */ 	addiu	$a2,$a2,0x1
-/*  f069730:	01c41823 */ 	subu	$v1,$t6,$a0
-/*  f069734:	00037843 */ 	sra	$t7,$v1,0x1
-/*  f069738:	008f2821 */ 	addu	$a1,$a0,$t7
-/*  f06973c:	24e70001 */ 	addiu	$a3,$a3,0x1
-/*  f069740:	1448fff7 */ 	bne	$v0,$t0,.L0f069720
-/*  f069744:	a0e5ffff */ 	sb	$a1,-0x1($a3)
-/*  f069748:	03e00008 */ 	jr	$ra
-/*  f06974c:	00000000 */ 	nop
-);
+/**
+ * Shift shadecol to be closer to nextcol.
+ *
+ * It works by moving halfway towards the nextcol colour each time it's called.
+ */
+void colourTween(u8 *col, u8 *nextcol)
+{
+	s32 i;
+
+	for (i = 0; i < 4; i++) {
+		s32 remaining = nextcol[i] - col[i];
+		s32 newcol = col[i] + (remaining >> 1);
+		col[i] = newcol;
+	}
+}
 
 GLOBAL_ASM(
 glabel func0f069750
@@ -27444,7 +27439,7 @@ s32 objTick(struct prop *prop)
 
 		if (sp572) {
 			if (prop->flags & PROPFLAG_80) {
-				func0f069710(obj->shadecol, obj->nextcol);
+				colourTween(obj->shadecol, obj->nextcol);
 			} else {
 				obj->shadecol[0] = obj->nextcol[0];
 				obj->shadecol[1] = obj->nextcol[1];
diff --git a/src/include/game/propobj.h b/src/include/game/propobj.h
index 103119a5a..8f3ef3c38 100644
--- a/src/include/game/propobj.h
+++ b/src/include/game/propobj.h
@@ -88,7 +88,7 @@ u32 func0f068c04(void);
 s32 func0f068fc8(struct prop *prop, bool arg1);
 void func0f069144(struct prop *prop, u8 *nextcol, u16 floorcol);
 void func0f069630(struct prop *prop, u8 *nextcol, u16 floorcol);
-void func0f069710(u8 *shadecol, u8 *nextcol);
+void colourTween(u8 *col, u8 *nextcol);
 void func0f069750(s32 *arg0, s32 arg1, f32 *arg2);
 void func0f069850(struct defaultobj *obj, struct coord *pos, f32 *realrot, struct tiletype3 *geo);
 void func0f069b4c(struct defaultobj *obj);