Some vanity fixes (#17797)

code/modules/client/preferences.dm

@@ -505,6 +505,9 @@ var/list/preferences_datums = list()
 	var/datum/preference/numeric/wing_alpha = GLOB.preference_entries[/datum/preference/numeric/human/wing_alpha]
 	wing_alpha.apply_pref_to(character,read_preference(/datum/preference/numeric/human/wing_alpha))
 
+	var/datum/preference/numeric/skin_color = GLOB.preference_entries[/datum/preference/color/human/skin_color]
+	skin_color.apply_pref_to(character,read_preference(/datum/preference/color/human/skin_color))
+
 	character.set_gender(biological_gender)
 
 	// Destroy/cyborgize organs and limbs.
@@ -529,7 +532,7 @@ var/list/preferences_datums = list()
 				else
 					var/bodytype
 					var/datum/species/selected_species = GLOB.all_species[species]
-					if(selected_species.selects_bodytype)
+					if(custom_base)
 						bodytype = custom_base
 					else
 						bodytype = selected_species.get_bodytype()
@@ -577,6 +580,7 @@ var/list/preferences_datums = list()
 	character.fuzzy				= fuzzy
 	character.offset_override	= offset_override
 	character.voice_freq		= voice_freq
+	character.size_multiplier = size_multiplier
 	character.resize(size_multiplier, animate = FALSE, ignore_prefs = TRUE)
 
 	var/list/traits_to_copy = list(/datum/trait/neutral/tall,
@@ -611,13 +615,15 @@ var/list/preferences_datums = list()
 
 	var/datum/species/selected_species = GLOB.all_species[species]
 	var/bodytype_selected
-	if(selected_species.selects_bodytype)
+	if(custom_base)
 		bodytype_selected = custom_base
 	else
 		bodytype_selected = selected_species.get_bodytype(character)
 
 	character.dna.base_species = bodytype_selected
 	character.species.base_species = bodytype_selected
+	character.species.icobase = character.species.get_icobase()
+	character.species.deform = character.species.get_icobase(get_deform = TRUE)
 	character.species.vanity_base_fit = bodytype_selected
 	if (istype(character.species, /datum/species/shapeshifter))
 		wrapped_species_by_ref["\ref[character]"] = bodytype_selected

code/modules/mob/living/carbon/human/species/species_getters.dm

@@ -26,6 +26,13 @@
 	return name
 
 /datum/species/proc/get_icobase(var/mob/living/carbon/human/H, var/get_deform)
+	if(base_species == name) //We don't have a custom base_species? Return the normal icobase.
+		return (get_deform ? deform : icobase)
+	else
+		var/datum/species/S = GLOB.all_species[base_species]
+		if(S) //So species can have multiple iconbases.
+			return S.get_icobase(H, get_deform)
+	//fallback
 	return (get_deform ? deform : icobase)
 
 /datum/species/proc/get_station_variant()