Don't keep around slimes from the previous cycle

bundle/main.lua

@@ -177,6 +177,8 @@ end
 
 function spawnSlimes()
 	-- Try spawning 20 slimes, but if they don't hit any location then don't care
+	slimes = {}
+
 	for i = 1, 20 do
 		local x = math.random(2, cavern.width - 1)
 		local y = math.random(2, cavern.height - 1)
@@ -728,7 +730,7 @@ function drawCavern()
 					love.graphics.rectangle('fill', x, y, x_scale, y_scale)
 				else
 					print("Impossible tile!!!")
-					love.graphics.setColor(1, 0, 0)
+					love.graphics.setColor(1, 1, 0)
 					love.graphics.rectangle('fill', x, y, x_scale, y_scale)
 				end
 			else