Merge pull request #9421 from Ghommie/Ghommie-cit218

Porting some spraycan fixes and tweaks.

code/game/objects/items/crayons.dm

@@ -234,8 +234,13 @@
 				paint_mode = PAINT_NORMAL
 		if("select_colour")
 			if(can_change_colour)
-				paint_color = input(usr,"","Choose Color",paint_color) as color|null
-				. = TRUE
+				var/chosen_colour = input(usr,"","Choose Color",paint_color) as color|null
+
+				if (!isnull(chosen_colour))
+					paint_color = chosen_colour
+					. = TRUE
+				else
+					. = FALSE
 		if("enter_text")
 			var/txt = stripped_input(usr,"Choose what to write.",
 				"Scribbles",default = text_buffer)
@@ -703,12 +708,18 @@
 
 	if(isobj(target))
 		if(actually_paints)
+			if(color_hex2num(paint_color) < 350 && !istype(target, /obj/structure/window) && !istype(target, /obj/effect/decal/cleanable/crayon)) //Colors too dark are rejected
+				to_chat(usr, "<span class='warning'>A color that dark on an object like this? Surely not...</span>")
+				return FALSE
+
 			target.add_atom_colour(paint_color, WASHABLE_COLOUR_PRIORITY)
+
 			if(istype(target, /obj/structure/window))
 				if(color_hex2num(paint_color) < 255)
 					target.set_opacity(255)
 				else
 					target.set_opacity(initial(target.opacity))
+
 		. = use_charges(user, 2)
 		var/fraction = min(1, . / reagents.maximum_volume)
 		reagents.reaction(target, TOUCH, fraction * volume_multiplier)
@@ -819,6 +830,11 @@
 	if(user.mind && user.mind.has_antag_datum(/datum/antagonist/gang) || isobserver(user))
 		to_chat(user, "This spraycan has been specially modified with a stage 2 nozzle kit, making it faster.")
 
+/obj/item/toy/crayon/spraycan/infinite
+	name = "infinite spraycan"
+	charges = -1
+	desc = "Now with 30% more bluespace technology."
+
 #undef RANDOM_GRAFFITI
 #undef RANDOM_LETTER
 #undef RANDOM_PUNCTUATION

code/modules/research/xenobiology/xenobiology.dm

@@ -523,7 +523,8 @@
 /obj/item/slime_extract/pyrite/activate(mob/living/carbon/human/user, datum/species/jelly/luminescent/species, activation_type)
 	switch(activation_type)
 		if(SLIME_ACTIVATE_MINOR)
-			var/chosen = pick(difflist(subtypesof(/obj/item/toy/crayon),typesof(/obj/item/toy/crayon/spraycan)))
+			var/blacklisted_cans = list(/obj/item/toy/crayon/spraycan/borg, /obj/item/toy/crayon/spraycan/infinite)
+			var/chosen = pick(subtypesof(/obj/item/toy/crayon/spraycan) - blacklisted_cans)
 			var/obj/item/O = new chosen(null)
 			if(!user.put_in_active_hand(O))
 				O.forceMove(user.drop_location())