diff --git a/code/modules/client/preference_setup/general/03_body.dm b/code/modules/client/preference_setup/general/03_body.dm
index 1fc3b1d8ba..c3d607d490 100644
--- a/code/modules/client/preference_setup/general/03_body.dm
+++ b/code/modules/client/preference_setup/general/03_body.dm
@@ -36,6 +36,7 @@ var/global/list/valid_bloodtypes = list("A+", "A-", "B+", "B-", "AB+", "AB-", "O
 	S["synth_red"]			>> pref.r_synth
 	S["synth_green"]		>> pref.g_synth
 	S["synth_blue"]			>> pref.b_synth
+	S["synth_markings"]		>> pref.synth_markings
 	pref.preview_icon = null
 	S["bgstate"]			>> pref.bgstate
 
@@ -65,6 +66,7 @@ var/global/list/valid_bloodtypes = list("A+", "A-", "B+", "B-", "AB+", "AB-", "O
 	S["synth_red"]			<< pref.r_synth
 	S["synth_green"]		<< pref.g_synth
 	S["synth_blue"]			<< pref.b_synth
+	S["synth_markings"]		<< pref.synth_markings
 	S["bgstate"]			<< pref.bgstate
 
 /datum/category_item/player_setup_item/general/body/sanitize_character(var/savefile/S)
@@ -120,6 +122,7 @@ var/global/list/valid_bloodtypes = list("A+", "A-", "B+", "B-", "AB+", "AB-", "O
 	character.r_synth	= pref.r_synth
 	character.g_synth	= pref.g_synth
 	character.b_synth	= pref.b_synth
+	character.synth_markings = pref.synth_markings
 
 	// Destroy/cyborgize organs and limbs.
 	for(var/name in list(BP_HEAD, BP_L_HAND, BP_R_HAND, BP_L_ARM, BP_R_ARM, BP_L_FOOT, BP_R_FOOT, BP_L_LEG, BP_R_LEG, BP_GROIN, BP_TORSO))
@@ -305,6 +308,7 @@ var/global/list/valid_bloodtypes = list("A+", "A-", "B+", "B-", "AB+", "AB-", "O
 		. += "<br>"
 
 	. += "<br>"
+	. += "<b>Allow Synth markings:</b> <a href='?src=\ref[src];synth_markings=1'><b>[pref.synth_markings ? "Yes" : "No"]</b></a><br>"
 	. += "<b>Allow Synth color:</b> <a href='?src=\ref[src];synth_color=1'><b>[pref.synth_color ? "Yes" : "No"]</b></a><br>"
 	if(pref.synth_color)
 		. += "<a href='?src=\ref[src];synth2_color=1'>Change Color</a> <font face='fixedsys' size='3' color='#[num2hex(pref.r_synth, 2)][num2hex(pref.g_synth, 2)][num2hex(pref.b_synth, 2)]'><table style='display:inline;' bgcolor='#[num2hex(pref.r_synth, 2)][num2hex(pref.g_synth, 2)][num2hex(pref.b_synth, 2)]'><tr><td>__</td></tr></table></font> "
@@ -702,6 +706,10 @@ var/global/list/valid_bloodtypes = list("A+", "A-", "B+", "B-", "AB+", "AB-", "O
 			pref.b_synth = hex2num(copytext(new_color, 6, 8))
 			return TOPIC_REFRESH_UPDATE_PREVIEW
 
+	else if(href_list["synth_markings"])
+		pref.synth_markings = !pref.synth_markings
+		return TOPIC_REFRESH_UPDATE_PREVIEW
+
 	else if(href_list["cycle_bg"])
 		pref.bgstate = next_in_list(pref.bgstate, pref.bgstate_options)
 		return TOPIC_REFRESH_UPDATE_PREVIEW
diff --git a/code/modules/client/preferences.dm b/code/modules/client/preferences.dm
index c45567e5a9..dee21ddd5b 100644
--- a/code/modules/client/preferences.dm
+++ b/code/modules/client/preferences.dm
@@ -60,6 +60,7 @@ datum/preferences
 	var/r_synth							//Used with synth_color to color synth parts that normaly can't be colored.
 	var/g_synth							//Same as above
 	var/b_synth							//Same as above
+	var/synth_markings = 0				//Enable/disable markings on synth parts.
 
 		//Some faction information.
 	var/home_system = "Unset"           //System of birth.
diff --git a/code/modules/mob/living/carbon/human/human_defines.dm b/code/modules/mob/living/carbon/human/human_defines.dm
index 244c22e80b..2cbd93260c 100644
--- a/code/modules/mob/living/carbon/human/human_defines.dm
+++ b/code/modules/mob/living/carbon/human/human_defines.dm
@@ -30,6 +30,7 @@
 	var/r_synth							//Used with synth_color to color synth parts that normaly can't be colored.
 	var/g_synth							//Same as above
 	var/b_synth							//Same as above
+	var/synth_markings = 0				//Enables/disables markings on synth parts.
 
 	var/damage_multiplier = 1 //multiplies melee combat damage
 	var/icon_update = 1 //whether icon updating shall take place
diff --git a/code/modules/organs/organ_icon.dm b/code/modules/organs/organ_icon.dm
index 1f5f583324..91b96fea31 100644
--- a/code/modules/organs/organ_icon.dm
+++ b/code/modules/organs/organ_icon.dm
@@ -179,6 +179,14 @@ var/global/list/limb_icon_cache = list()
 	if(model)
 		icon_cache_key += "_model_[model]"
 		apply_colouration(mob_icon)
+		if(owner && owner.synth_markings)
+			for(var/M in markings)
+				var/datum/sprite_accessory/marking/mark_style = markings[M]["datum"]
+				var/icon/mark_s = new/icon("icon" = mark_style.icon, "icon_state" = "[mark_style.icon_state]-[organ_tag]")
+				mark_s.Blend(markings[M]["color"], ICON_ADD)
+				add_overlay(mark_s) //So when it's not on your body, it has icons
+				mob_icon.Blend(mark_s, ICON_OVERLAY) //So when it's on your body, it has icons
+				icon_cache_key += "[M][markings[M]["color"]]"
 
 	dir = EAST
 	icon = mob_icon