diff --git a/code/modules/mob/living/carbon/human/species/species.dm b/code/modules/mob/living/carbon/human/species/species.dm
index bb5d989e45..e31b7cfe6e 100644
--- a/code/modules/mob/living/carbon/human/species/species.dm
+++ b/code/modules/mob/living/carbon/human/species/species.dm
@@ -11,6 +11,7 @@
 
 	// Icon/appearance vars.
 	var/icobase = 'icons/mob/human_races/r_human.dmi'    // Normal icon set.
+	var/icobase_add										 // Icon set for highlight blends when applicable.
 	var/deform = 'icons/mob/human_races/r_def_human.dmi' // Mutated icon set.
 
 	var/speech_bubble_appearance = "normal"              // Part of icon_state to use for speech bubbles when talking.  See talk.dmi for available icons.
@@ -28,6 +29,7 @@
 
 	var/tail                                             // Name of tail state in species effects icon file.
 	var/tail_animation                                   // If set, the icon to obtain tail animation states from.
+	var/tail_animation_add								 // Highlight overlay for tail.
 	var/tail_hair
 
 	var/race_key = 0       	                             // Used for mob icon cache string.
diff --git a/code/modules/mob/living/carbon/human/species/species_getters.dm b/code/modules/mob/living/carbon/human/species/species_getters.dm
index efb053eddf..e0be03af1d 100644
--- a/code/modules/mob/living/carbon/human/species/species_getters.dm
+++ b/code/modules/mob/living/carbon/human/species/species_getters.dm
@@ -10,6 +10,9 @@
 /datum/species/proc/get_tail_animation(var/mob/living/carbon/human/H)
 	return tail_animation
 
+/datum/species/proc/get_tail_animation_a(var/mob/living/carbon/human/H)
+	return tail_animation_add
+
 /datum/species/proc/get_tail_hair(var/mob/living/carbon/human/H)
 	return tail_hair
 
@@ -28,6 +31,9 @@
 /datum/species/proc/get_icobase(var/mob/living/carbon/human/H, var/get_deform)
 	return (get_deform ? deform : icobase)
 
+/datum/species/proc/get_icobase_a(var/mob/living/carbon/human/H)
+	return icobase_add
+
 /datum/species/proc/get_station_variant()
 	return name
 
diff --git a/code/modules/mob/living/carbon/human/species/station/seromi.dm b/code/modules/mob/living/carbon/human/species/station/seromi.dm
index 0a6e1df9a4..2049c169fe 100644
--- a/code/modules/mob/living/carbon/human/species/station/seromi.dm
+++ b/code/modules/mob/living/carbon/human/species/station/seromi.dm
@@ -26,7 +26,8 @@
 	tail_hair = "feathers"
 	reagent_tag = IS_TESHARI
 
-	icobase = 'icons/mob/human_races/r_seromi.dmi'
+	icobase = 'icons/mob/human_races/r_seromi_m.dmi'
+	icobase_add = 'icons/mob/human_races/r_seromi_a.dmi'
 	deform = 'icons/mob/human_races/r_seromi.dmi'
 	damage_overlays = 'icons/mob/human_races/masks/dam_seromi.dmi'
 	damage_mask = 'icons/mob/human_races/masks/dam_mask_seromi.dmi'
diff --git a/code/modules/mob/living/carbon/human/species/station/station.dm b/code/modules/mob/living/carbon/human/species/station/station.dm
index f07ff9b119..686519394f 100644
--- a/code/modules/mob/living/carbon/human/species/station/station.dm
+++ b/code/modules/mob/living/carbon/human/species/station/station.dm
@@ -25,10 +25,12 @@
 /datum/species/unathi
 	name = "Unathi"
 	name_plural = "Unathi"
-	icobase = 'icons/mob/human_races/r_lizard.dmi'
+	icobase = 'icons/mob/human_races/r_lizard_m.dmi'
+	icobase_add = 'icons/mob/human_races/r_lizard_a.dmi'
 	deform = 'icons/mob/human_races/r_def_lizard.dmi'
 	tail = "sogtail"
-	tail_animation = 'icons/mob/species/unathi/tail.dmi'
+	tail_animation = 'icons/mob/species/unathi/tail_m.dmi'
+	tail_animation_add = 'icons/mob/species/unathi/tail_a.dmi'
 	unarmed_types = list(/datum/unarmed_attack/stomp, /datum/unarmed_attack/kick, /datum/unarmed_attack/claws, /datum/unarmed_attack/bite/sharp)
 	primitive_form = "Stok"
 	darksight = 3
@@ -128,10 +130,12 @@
 /datum/species/tajaran
 	name = "Tajara"
 	name_plural = "Tajaran"
-	icobase = 'icons/mob/human_races/r_tajaran.dmi'
+	icobase = 'icons/mob/human_races/r_tajaran_m.dmi'
+	icobase_add = 'icons/mob/human_races/r_tajaran_a.dmi'
 	deform = 'icons/mob/human_races/r_def_tajaran.dmi'
 	tail = "tajtail"
-	tail_animation = 'icons/mob/species/tajaran/tail.dmi'
+	tail_animation = 'icons/mob/species/tajaran/tail_m.dmi'
+	tail_animation_add = 'icons/mob/species/tajaran/tail_a.dmi'
 	unarmed_types = list(/datum/unarmed_attack/stomp, /datum/unarmed_attack/kick, /datum/unarmed_attack/claws, /datum/unarmed_attack/bite/sharp)
 	darksight = 8
 	slowdown = -0.5
@@ -209,7 +213,8 @@
 /datum/species/skrell
 	name = "Skrell"
 	name_plural = "Skrell"
-	icobase = 'icons/mob/human_races/r_skrell.dmi'
+	icobase = 'icons/mob/human_races/r_skrell_m.dmi'
+	icobase_add = 'icons/mob/human_races/r_skrell_a.dmi'
 	deform = 'icons/mob/human_races/r_def_skrell.dmi'
 	primitive_form = "Neaera"
 	unarmed_types = list(/datum/unarmed_attack/punch)
diff --git a/code/modules/mob/living/carbon/human/update_icons.dm b/code/modules/mob/living/carbon/human/update_icons.dm
index 807d6125c8..0b9126bc3f 100644
--- a/code/modules/mob/living/carbon/human/update_icons.dm
+++ b/code/modules/mob/living/carbon/human/update_icons.dm
@@ -1041,14 +1041,22 @@ var/global/list/damage_icon_parts = list()
 	if(!tail_icon)
 		//generate a new one
 		var/species_tail_anim = species.get_tail_animation(src)
-		if(!species_tail_anim) species_tail_anim = 'icons/effects/species.dmi'
+		var/species_tail_anim_a = species.get_tail_animation_a(src)
+		if(!species_tail_anim)
+			species_tail_anim = 'icons/effects/species.dmi'
+		if(!species_tail_anim_a)
+			species_tail_anim_a = 'icons/effects/species_a.dmi'
 		tail_icon = new/icon(species_tail_anim)
-		tail_icon.Blend(rgb(r_skin, g_skin, b_skin), ICON_ADD)
+		var/tail_icon_a = new/icon(species_tail_anim_a)
+		tail_icon.Blend(rgb(r_skin, g_skin, b_skin), ICON_MULTIPLY)
+		tail_icon.Blend(tail_icon_a, ICON_ADD)
 		// The following will not work with animated tails.
 		var/use_species_tail = species.get_tail_hair(src)
 		if(use_species_tail)
 			var/icon/hair_icon = icon('icons/effects/species.dmi', "[species.get_tail(src)]_[use_species_tail]")
-			hair_icon.Blend(rgb(r_hair, g_hair, b_hair), ICON_ADD)
+			var/icon/hair_icon_a = icon('icons/effects/species_a.dmi', "[species.get_tail(src)]_[use_species_tail]")
+			hair_icon.Blend(rgb(r_hair, g_hair, b_hair), ICON_MULTIPLY)
+			hair_icon.Blend(hair_icon_a, ICON_ADD)
 			tail_icon.Blend(hair_icon, ICON_OVERLAY)
 		tail_icon_cache[icon_key] = tail_icon
 
diff --git a/code/modules/organs/organ_icon.dm b/code/modules/organs/organ_icon.dm
index 914dc8632e..40ab0ab500 100644
--- a/code/modules/organs/organ_icon.dm
+++ b/code/modules/organs/organ_icon.dm
@@ -145,7 +145,9 @@ var/global/list/limb_icon_cache = list()
 				var/cache_key = "[body_hair]-[icon_name]-[h_col[1]][h_col[2]][h_col[3]]"
 				if(!limb_icon_cache[cache_key])
 					var/icon/I = icon(species.get_icobase(owner), "[icon_name]_[body_hair]")
-					I.Blend(rgb(h_col[1],h_col[2],h_col[3]), ICON_ADD)
+					var/icon/IA = icon(species.get_icobase_a(owner), "[icon_name]_[body_hair]")
+					I.Blend(rgb(h_col[1],h_col[2],h_col[3]), ICON_MULTIPLY)
+					I.Blend(IA, ICON_ADD)
 					limb_icon_cache[cache_key] = I
 				mob_icon.Blend(limb_icon_cache[cache_key], ICON_OVERLAY)
 
@@ -161,10 +163,7 @@ var/global/list/limb_icon_cache = list()
 
 	if(nonsolid)
 		applying.MapColors("#4D4D4D","#969696","#1C1C1C", "#000000")
-		if(species && species.get_bodytype(owner) != "Human")
-			applying.SetIntensity(1.5) // Unathi, Taj and Skrell have -very- dark base icons.
-		else
-			applying.SetIntensity(0.7)
+		applying.SetIntensity(0.7)
 
 	else if(status & ORGAN_DEAD)
 		icon_cache_key += "_dead"
@@ -178,7 +177,12 @@ var/global/list/limb_icon_cache = list()
 			applying.Blend(rgb(-s_tone,  -s_tone,  -s_tone), ICON_SUBTRACT)
 		icon_cache_key += "_tone_[s_tone]"
 	else if(s_col && s_col.len >= 3)
-		applying.Blend(rgb(s_col[1], s_col[2], s_col[3]), ICON_ADD)
+		applying.Blend(rgb(s_col[1], s_col[2], s_col[3]), ICON_MULTIPLY)
+		var/gender = "f"
+		if(owner && owner.gender == MALE)
+			gender = "m"
+		var/icon_a = new /icon(species.get_icobase_a(owner), "[icon_name][gendered_icon ? "_[gender]" : ""]")
+		applying.Blend(icon_a, ICON_ADD)
 		icon_cache_key += "_color_[s_col[1]]_[s_col[2]]_[s_col[3]]"
 
 	// Translucency.
diff --git a/icons/effects/species.dmi b/icons/effects/species.dmi
index fbd952d333..5b71d3e153 100644
Binary files a/icons/effects/species.dmi and b/icons/effects/species.dmi differ
diff --git a/icons/effects/species_a.dmi b/icons/effects/species_a.dmi
new file mode 100644
index 0000000000..927ec7c82e
Binary files /dev/null and b/icons/effects/species_a.dmi differ
diff --git a/icons/mob/human_races/r_def_lizard.dmi b/icons/mob/human_races/r_def_lizard.dmi
index 6c1f4d94fc..3ebace3090 100644
Binary files a/icons/mob/human_races/r_def_lizard.dmi and b/icons/mob/human_races/r_def_lizard.dmi differ
diff --git a/icons/mob/human_races/r_def_skrell.dmi b/icons/mob/human_races/r_def_skrell.dmi
index 7b24ba3b4d..3e6a40f3ae 100644
Binary files a/icons/mob/human_races/r_def_skrell.dmi and b/icons/mob/human_races/r_def_skrell.dmi differ
diff --git a/icons/mob/human_races/r_def_tajaran.dmi b/icons/mob/human_races/r_def_tajaran.dmi
index 44cda2ea86..64b1a2d30d 100644
Binary files a/icons/mob/human_races/r_def_tajaran.dmi and b/icons/mob/human_races/r_def_tajaran.dmi differ
diff --git a/icons/mob/human_races/r_lizard_a.dmi b/icons/mob/human_races/r_lizard_a.dmi
new file mode 100644
index 0000000000..94dfe1ed32
Binary files /dev/null and b/icons/mob/human_races/r_lizard_a.dmi differ
diff --git a/icons/mob/human_races/r_lizard_m.dmi b/icons/mob/human_races/r_lizard_m.dmi
new file mode 100644
index 0000000000..1aeee3a022
Binary files /dev/null and b/icons/mob/human_races/r_lizard_m.dmi differ
diff --git a/icons/mob/human_races/r_seromi_a.dmi b/icons/mob/human_races/r_seromi_a.dmi
new file mode 100644
index 0000000000..24d49ef1eb
Binary files /dev/null and b/icons/mob/human_races/r_seromi_a.dmi differ
diff --git a/icons/mob/human_races/r_seromi_m.dmi b/icons/mob/human_races/r_seromi_m.dmi
new file mode 100644
index 0000000000..b080124b26
Binary files /dev/null and b/icons/mob/human_races/r_seromi_m.dmi differ
diff --git a/icons/mob/human_races/r_skrell_a.dmi b/icons/mob/human_races/r_skrell_a.dmi
new file mode 100644
index 0000000000..7da571bf1e
Binary files /dev/null and b/icons/mob/human_races/r_skrell_a.dmi differ
diff --git a/icons/mob/human_races/r_skrell_m.dmi b/icons/mob/human_races/r_skrell_m.dmi
new file mode 100644
index 0000000000..224fb25eae
Binary files /dev/null and b/icons/mob/human_races/r_skrell_m.dmi differ
diff --git a/icons/mob/human_races/r_tajaran_a.dmi b/icons/mob/human_races/r_tajaran_a.dmi
new file mode 100644
index 0000000000..d70bb0b715
Binary files /dev/null and b/icons/mob/human_races/r_tajaran_a.dmi differ
diff --git a/icons/mob/human_races/r_tajaran_m.dmi b/icons/mob/human_races/r_tajaran_m.dmi
new file mode 100644
index 0000000000..a9d2205828
Binary files /dev/null and b/icons/mob/human_races/r_tajaran_m.dmi differ
diff --git a/icons/mob/species/tajaran/tail_a.dmi b/icons/mob/species/tajaran/tail_a.dmi
new file mode 100644
index 0000000000..1a4245611b
Binary files /dev/null and b/icons/mob/species/tajaran/tail_a.dmi differ
diff --git a/icons/mob/species/tajaran/tail_m.dmi b/icons/mob/species/tajaran/tail_m.dmi
new file mode 100644
index 0000000000..159ca49b32
Binary files /dev/null and b/icons/mob/species/tajaran/tail_m.dmi differ
diff --git a/icons/mob/species/unathi/tail_a.dmi b/icons/mob/species/unathi/tail_a.dmi
new file mode 100644
index 0000000000..cf3e861a5d
Binary files /dev/null and b/icons/mob/species/unathi/tail_a.dmi differ
diff --git a/icons/mob/species/unathi/tail_m.dmi b/icons/mob/species/unathi/tail_m.dmi
new file mode 100644
index 0000000000..b944c3e37b
Binary files /dev/null and b/icons/mob/species/unathi/tail_m.dmi differ