several bugfixes (#7577)

code/modules/mob/living/carbon/human/life.dm

@@ -1756,13 +1756,10 @@
 
 	if(modifiers && modifiers.len)
 		for(var/datum/modifier/mod in modifiers)
-			if(isnull(modifier_set) && !isnull(mod.pulse_set_level))
+			if(isnull(mod.pulse_set_level))
+				continue
+			if(isnull(modifier_set) || mod.pulse_set_level > modifier_set)
 				modifier_set = round(mod.pulse_set_level)	// Should be a whole number, but let's not take chances.
-			else if(mod.pulse_set_level > modifier_set)
-				modifier_set = round(mod.pulse_set_level)
-
-			modifier_set = max(0, modifier_set)	// No setting to negatives.
-
 			if(mod.pulse_modifier)
 				modifier_shift += mod.pulse_modifier
 

code/modules/multiz/structures/ladder.dm

@@ -94,6 +94,9 @@
 	if(incapacitated())
 		to_chat(src, "<span class='warning'>You are physically unable to climb \the [ladder].</span>")
 		return FALSE
+	if(is_buckled())
+		to_chat(src, "<spab class='warning'>You can't do this while buckled to \the [buckled]!</span>")
+		return FALSE
 	return TRUE
 
 /mob/observer/ghost/may_climb_ladders(var/ladder)

code/modules/reagents/chemistry/reactions/paint.dm

@@ -1,5 +1,6 @@
 /datum/chemical_reaction/paint
 	abstract_type = /datum/chemical_reaction/paint
+	has_data_semantics = TRUE
 	var/result_color
 
 /datum/chemical_reaction/paint/compute_result_data_initializer(datum/reagent_holder/holder, multiplier)

code/modules/reagents/chemistry/reagents/other/paint.dm

@@ -46,9 +46,9 @@
 	var/total_volume = old_volume + new_volume
 	var/old_hex = uppertext(old_data || "#ffffff")
 	var/new_hex = uppertext(new_data || "#ffffff")
+
 	return rgb(
 		((hex2num(copytext(old_hex, 2, 4)) * old_volume) + (hex2num(copytext(new_hex, 2, 4)))) / total_volume,
 		((hex2num(copytext(old_hex, 4, 6)) * old_volume) + (hex2num(copytext(new_hex, 4, 6)))) / total_volume,
-		((hex2num(copytext(old_hex, 6, 8)) * old_volume) + (hex2num(copytext(new_hex, 6, 8)))) / total_volume,
-		((hex2num(length(old_hex) > 7 ? copytext(old_hex, 8, 10) : 255) * old_volume) + (hex2num(length(new_hex) > 7 ? copytext(new_hex, 8, 10) : 255))) / total_volume,
+		((hex2num(copytext(old_hex, 6, 8)) * old_volume) + (hex2num(copytext(new_hex, 6, 8)))) / total_volume
 	)

code/modules/species/holosphere/holosphere.dm

@@ -163,8 +163,10 @@
 
 // hotfix: they're synthetic without synthetic parts, oops!
 /datum/species/shapeshifter/holosphere/get_blood_colour(mob/living/carbon/human/H)
-	if(H)
-		return blood_color
+	return blood_color
+
+/datum/species/shapeshifter/holosphere/get_blood_name(mob/living/carbon/human/H)
+	return "coolant"
 
 /datum/species/shapeshifter/holosphere/get_valid_shapeshifter_forms()
 	return list(