Some slight fixes

code/__DEFINES/misc.dm

@@ -171,17 +171,18 @@ GLOBAL_LIST_EMPTY(bloody_footprints_cache)
 #define BLOOD_LOSS_IN_SPREAD		20
 
 //Bloody shoe blood states
-#define BLOOD_STATE_HUMAN			"blood"
-#define BLOOD_STATE_XENO			"xeno"
+#define BLOOD_STATE_BLOOD			"blood"
 #define BLOOD_STATE_OIL				"oil"
 #define BLOOD_STATE_NOT_BLOODY		"no blood whatsoever"
 #define BLOOD_AMOUNT_PER_DECAL		20
 
 //Blood Decal Colors
-#define BLOOD_COLOR_HUMAN			"#C80000"
+#define BLOOD_COLOR_HUMAN			"#dc0000"
 #define BLOOD_COLOR_XENO			"#94a83c"
-#define BLOOD_COLOR_OIL				"#000000"
+#define BLOOD_COLOR_OIL				"#301d02"
 #define BLOOD_COLOR_SYNTHETIC		"#0b0730"
+#define BLOOD_COLOR_SLIME			"#00ff90"
+#define BLOOD_COLOR_LIZARD			"#db004D"
 
 //suit sensors: sensor_mode defines
 

code/game/atoms.dm

@@ -336,6 +336,15 @@
 /mob/living/carbon/alien/get_blood_dna_list()
 	return list("UNKNOWN DNA" = "X*")
 
+//to add blood dna info to the object's blood_DNA list
+/atom/proc/transfer_blood_dna(list/blood_dna)
+	if(!blood_DNA)
+		blood_DNA = list()
+	var/old_length = blood_DNA.len
+	blood_DNA |= blood_dna
+	if(blood_DNA.len > old_length)
+		return TRUE//some new blood DNA was added
+
 //to add a mob's dna info into an object's blood_DNA list.
 /atom/proc/transfer_mob_blood_dna(mob/living/L)
 	// Returns 0 if we have that blood already

code/game/objects/effects/decals/cleanable/aliens.dm

@@ -3,7 +3,7 @@
 /obj/effect/decal/cleanable/blood/xenoblood
 	name = "xeno blood"
 	desc = "It's green and acidic. It looks like... <i>blood?</i>"
-	blood_state = BLOOD_STATE_XENO
+	blood_state = BLOOD_STATE_BLOOD
 	color = BLOOD_COLOR_XENO
 
 /obj/effect/decal/cleanable/blood/xenoblood/Initialize()
@@ -14,16 +14,6 @@
 	name = "xeno gibs"
 	desc = "Gnarly..."
 
-/obj/effect/decal/cleanable/blood/xenoblood/gibs/proc/streak(list/directions)
-	set waitfor = 0
-	var/direction = pick(directions)
-	for(var/i = 0, i < pick(1, 200; 2, 150; 3, 50), i++)
-		sleep(2)
-		if(i > 0)
-			new /obj/effect/decal/cleanable/blood/splatter(loc)
-		if(!step_to(src, get_step(src, direction), 0))
-			break
-
 /obj/effect/decal/cleanable/blood/xenoblood/gibs/up
 	random_icon_states = list("xgib1", "xgib2", "xgib3", "xgib4", "xgib5", "xgib6","xgibup1","xgibup1","xgibup1")
 

code/game/objects/effects/decals/cleanable/humans.dm

@@ -4,21 +4,20 @@
 	icon = 'icons/effects/blood.dmi'
 	icon_state = "floor1"
 	random_icon_states = list("floor1", "floor2", "floor3", "floor4", "floor5", "floor6", "floor7")
-	blood_state = BLOOD_STATE_HUMAN
+	blood_state = BLOOD_STATE_BLOOD
+	color = BLOOD_COLOR_HUMAN
 	blood_DNA = list()
 	bloodiness = BLOOD_AMOUNT_PER_DECAL
 
-/obj/effect/cleanable/blood/Initialize()
-	. = ..()
-	update_icon()
-
 /obj/effect/decal/cleanable/blood/replace_decal(obj/effect/decal/cleanable/blood/C)
-	C.add_blood_DNA(return_blood_DNA())
-	if (bloodiness)
-		if (C.bloodiness < MAX_SHOE_BLOODINESS)
-			C.bloodiness += bloodiness
+	if (C.blood_DNA)
+		blood_DNA |= C.blood_DNA.Copy()
+	update_icon()
+	..()
+
+/obj/effect/decal/cleanable/blood/transfer_blood_dna()
+	..()
 	update_icon()
-	return ..()
 
 /obj/effect/decal/cleanable/blood/transfer_mob_blood_dna()
 	. = ..()
@@ -29,13 +28,13 @@
 
 /obj/effect/decal/cleanable/blood/old
 	name = "dried blood"
-	desc = "Looks like it's been here a while.  Eew."
+	desc = "Looks like it's been here a while. Eew."
 	bloodiness = 0
 
 /obj/effect/decal/cleanable/blood/old/Initialize(mapload, list/datum/disease/diseases)
+	. = ..()
 	icon_state += "-old" //This IS necessary because the parent /blood type uses icon randomization.
-	add_blood_DNA(list("Non-human DNA" = "A+")) // Needs to happen before ..()
-	return ..()
+	add_blood_DNA(list("Non-human DNA" = "A+"))
 
 /obj/effect/decal/cleanable/blood/splatter
 	random_icon_states = list("gibbl1", "gibbl2", "gibbl3", "gibbl4", "gibbl5")
@@ -47,7 +46,7 @@
 
 /obj/effect/decal/cleanable/trail_holder //not a child of blood on purpose so that it shows up even on regular splatters
 	name = "blood"
-	icon_state = "trails_1"
+	icon_state = "ltrails_1"
 	desc = "Your instincts say you shouldn't be following these."
 	random_icon_states = null
 	var/list/existing_dirs = list()
@@ -63,7 +62,7 @@
 /obj/effect/decal/cleanable/trail_holder/can_bloodcrawl_in()
 	return TRUE
 
-/obj/effect/decal/cleanable/trail_holder/transfer_mob_blood_dna()
+/obj/effect/decal/cleanable/trail_holder/transfer_blood_dna()
 	..()
 	update_icon()
 
@@ -162,7 +161,7 @@
 	random_icon_states = null
 	var/entered_dirs = 0
 	var/exited_dirs = 0
-	blood_state = BLOOD_STATE_HUMAN //the icon state to load images from
+	blood_state = BLOOD_STATE_BLOOD //the icon state to load images from
 	var/list/shoe_types = list()
 
 /obj/effect/decal/cleanable/blood/footprints/Crossed(atom/movable/O)
@@ -191,7 +190,6 @@
 				exited_dirs |= H.dir
 				update_icon()
 
-
 /obj/effect/decal/cleanable/blood/footprints/update_icon()
 	..()
 	cut_overlays()
@@ -210,13 +208,14 @@
 
 	alpha = BLOODY_FOOTPRINT_BASE_ALPHA + bloodiness
 
+
 /obj/effect/decal/cleanable/blood/footprints/examine(mob/user)
 	. = ..()
 	if(shoe_types.len)
 		. += "You recognise the footprints as belonging to:\n"
 		for(var/shoe in shoe_types)
 			var/obj/item/clothing/shoes/S = shoe
-			. += "[icon2html(initial(S.icon), user)] Some <B>[initial(S.name)]</B>.\n"
+			. += "some <B>[initial(S.name)]</B> [icon2html(initial(S.icon), user)]\n"
 
 	to_chat(user, .)
 

code/modules/clothing/shoes/_shoes.dm

@@ -11,7 +11,7 @@
 	permeability_coefficient = 0.5
 	slowdown = SHOES_SLOWDOWN
 	var/blood_state = BLOOD_STATE_NOT_BLOODY
-	var/list/bloody_shoes = list(BLOOD_STATE_HUMAN = 0,BLOOD_STATE_XENO = 0, BLOOD_STATE_OIL = 0, BLOOD_STATE_NOT_BLOODY = 0)
+	var/list/bloody_shoes = list(BLOOD_STATE_BLOOD = 0, BLOOD_STATE_OIL = 0, BLOOD_STATE_NOT_BLOODY = 0)
 	var/offset = 0
 	var/equipped_before_drop = FALSE
 	var/last_bloodtype = ""//used to track the last bloodtype to have graced these shoes; makes for better performing footprint shenanigans
@@ -57,7 +57,7 @@
 		IF_HAS_BLOOD_DNA(src)
 			bloody = TRUE
 		else
-			bloody = bloody_shoes[BLOOD_STATE_HUMAN]
+			bloody = bloody_shoes[BLOOD_STATE_BLOOD]
 
 		if(damaged_clothes)
 			. += mutable_appearance('icons/effects/item_damage.dmi', "damagedshoe")
@@ -104,7 +104,7 @@
 /obj/item/clothing/shoes/proc/clean_blood(datum/source, strength)
 	if(strength < CLEAN_STRENGTH_BLOOD)
 		return
-	bloody_shoes = list(BLOOD_STATE_HUMAN = 0,BLOOD_STATE_XENO = 0, BLOOD_STATE_OIL = 0, BLOOD_STATE_NOT_BLOODY = 0)
+	bloody_shoes = list(BLOOD_STATE_BLOOD = 0, BLOOD_STATE_OIL = 0, BLOOD_STATE_NOT_BLOODY = 0)
 	blood_state = BLOOD_STATE_NOT_BLOODY
 	if(ismob(loc))
 		var/mob/M = loc

code/modules/mob/mob_helpers.dm

@@ -490,15 +490,15 @@ It's fairly easy to fix if dealing with single letters but not so much with comp
 	. = BLOOD_COLOR_HUMAN
 	switch(type)
 		if("U")//Universal blood; a bit orange
-			. = "#DB3300"
+			. = "#db3300"
 		if("SY")//Synthetics blood; blue
 			. = BLOOD_COLOR_SYNTHETIC
 		if("L")//lizard, a bit pink/purple
-			. = "#DB004D"
+			. = BLOOD_COLOR_LIZARD
 		if("X*")//xeno blood; greenish yellow
 			. = BLOOD_COLOR_XENO
 		if("HF")// Oil/Hydraulic blood. something something why not. reee
 			. = BLOOD_COLOR_OIL
 		if("GEL")// slimepeople blood, rgb 0, 255, 144
-			. = "#00FF90"
+			. = BLOOD_COLOR_SLIME
 		//add more stuff to the switch if you have more blood colors for different types

code/modules/reagents/chemistry/reagents/other_reagents.dm

@@ -123,7 +123,7 @@
 	name = "Slime Jelly Blood"
 	id = "jellyblood"
 	description = "A gooey semi-liquid produced from one of the deadliest lifeforms in existence. SO REAL."
-	color = "#00FF90"
+	color = BLOOD_COLOR_SLIME
 	taste_description = "slime"
 	taste_mult = 1.3