Makes slimes have slime jelly for blood (#14665)

* Makes slimes have slime jelly for blood, reduces the healing and toxin effects of slime jelly

* Slime jelly is a diffrent colour so it does not look like blood, slime jelly iv bag added, said bag is now found in nanomed plus

* Makes slimes bleed in c o l o u r, makes iron affect exotic blood species.

* Makes slime blood always the same colour as skin, fixing dye and CMA issues

* Fixes iron mistake

* Fix henk stuff

Adds EXOTIC_COLOR trait, used if you want exotic blood to be coloured when splattering, in this case slime blood. Removes uneeded blood data stuff

* Update toxins.dm

* Fixes the black blood issue

By B-B-BLENDING the slime colour with a medium grey, it helps match the blood colour to the true colour of the slime way better, meaning that a default slime that looks grey (but techicaly has pitch black skin codewise) will have grey blood.

* Update code/modules/reagents/chemistry/reagents/toxins.dm

Co-authored-by: farie82 <joepvelden@hotmail.com>

* Update code/modules/mob/living/carbon/human/species/slime.dm

Co-authored-by: farie82 <joepvelden@hotmail.com>

* Update code/modules/reagents/chemistry/reagents/toxins.dm

Co-authored-by: farie82 <joepvelden@hotmail.com>

* Update code/modules/reagents/chemistry/reagents/toxins.dm

Co-authored-by: farie82 <joepvelden@hotmail.com>

* Signals for henk, fixes henks worries, less processing

* Fixes runtime

* Update code/modules/mob/living/carbon/human/species/slime.dm

Co-authored-by: farie82 <joepvelden@hotmail.com>

* Update code/modules/surgery/organs/blood.dm

Co-authored-by: farie82 <joepvelden@hotmail.com>

* Update code/modules/surgery/organs/blood.dm

Co-authored-by: farie82 <joepvelden@hotmail.com>

* Update code/modules/mob/living/carbon/human/species/slime.dm

Co-authored-by: farie82 <joepvelden@hotmail.com>

* Update code/modules/mob/living/carbon/human/species/slime.dm

Co-authored-by: farie82 <joepvelden@hotmail.com>

Co-authored-by: farie82 <joepvelden@hotmail.com>

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

@@ -37,3 +37,19 @@
 
 /obj/effect/decal/cleanable/blood/xtracks
 	basecolor = "#05EE05"
+
+/obj/effect/decal/cleanable/blood/slime // this is the alien blood file, slimes are aliens.
+	name = "slime jelly"
+	desc = "It's a transparent semi-liquid from a slime or slime person. Don't lick it."
+	basecolor = "#0b8f70"
+	bloodiness = MAX_SHOE_BLOODINESS
+
+/obj/effect/decal/cleanable/blood/slime/can_bloodcrawl_in()
+	return FALSE
+
+/obj/effect/decal/cleanable/blood/slime/dry()
+	return
+
+/obj/effect/decal/cleanable/blood/slime/streak
+	random_icon_states = list("mgibbl1", "mgibbl2", "mgibbl3", "mgibbl4", "mgibbl5")
+	amount = 2