diff --git a/load/graphics.lua b/load/graphics.lua
index 73fd409..e1297d1 100644
--- a/load/graphics.lua
+++ b/load/graphics.lua
@@ -25,6 +25,15 @@ backgrounds = {
 	game_config = love.graphics.newImage("res/backgrounds/options-game.png"),
 }
 
+-- in order, the colors are:
+-- red, orange, yellow, green, cyan, blue
+-- magenta (or purple), white, black
+-- the next three don't have colors tied to them
+-- F is used for lock flash
+-- A is a garbage block
+-- X is an invisible "block"
+-- don't use these for piece colors when making a ruleset
+-- all the others are fine to use
 blocks = {
 	["2tie"] = {
 		R = love.graphics.newImage("res/img/s1.png"),
@@ -34,6 +43,8 @@ blocks = {
 		C = love.graphics.newImage("res/img/s2.png"),
 		B = love.graphics.newImage("res/img/s4.png"),
 		M = love.graphics.newImage("res/img/s5.png"),
+		W = love.graphics.newImage("res/img/s9.png"),
+		D = love.graphics.newImage("res/img/s8.png"),
 		F = love.graphics.newImage("res/img/s9.png"),
 		A = love.graphics.newImage("res/img/s8.png"),
 		X = love.graphics.newImage("res/img/s9.png"),
@@ -46,6 +57,8 @@ blocks = {
 		C = love.graphics.newImage("res/img/bone.png"),
 		B = love.graphics.newImage("res/img/bone.png"),
 		M = love.graphics.newImage("res/img/bone.png"),
+		W = love.graphics.newImage("res/img/bone.png"),
+		D = love.graphics.newImage("res/img/bone.png"),
 		F = love.graphics.newImage("res/img/bone.png"),
 		A = love.graphics.newImage("res/img/bone.png"),
 		X = love.graphics.newImage("res/img/bone.png"),
@@ -58,13 +71,16 @@ blocks = {
 		C = love.graphics.newImage("res/img/gem2.png"),
 		B = love.graphics.newImage("res/img/gem4.png"),
 		M = love.graphics.newImage("res/img/gem5.png"),
+		W = love.graphics.newImage("res/img/gem9.png"),
+		D = love.graphics.newImage("res/img/gem9.png"),
 		F = love.graphics.newImage("res/img/gem9.png"),
 		A = love.graphics.newImage("res/img/gem9.png"),
 		X = love.graphics.newImage("res/img/gem9.png"),
 	},
 	["square"] = {
-		F = love.graphics.newImage("res/img/squares.png"),
+		W = love.graphics.newImage("res/img/squares.png"),
 		Y = love.graphics.newImage("res/img/squareg.png"),
+		F = love.graphics.newImage("res/img/squares.png"),
 		X = love.graphics.newImage("res/img/squares.png"),
 	}
 }
@@ -87,7 +103,7 @@ ColourSchemes = {
 		Z = "R",
 		O = "Y",
 		T = "M",
-	},
+	}
 }
 
 for name, blockset in pairs(blocks) do
diff --git a/tetris/components/grid.lua b/tetris/components/grid.lua
index c7c2721..d8c2bd1 100644
--- a/tetris/components/grid.lua
+++ b/tetris/components/grid.lua
@@ -349,7 +349,7 @@ function Grid:markSquares()
 					elseif i == 2 then
 						for j = 0, 3 do
 							for k = 0, 3 do
-								self.grid[y+j][x+k].colour = "F"
+								self.grid[y+j][x+k].colour = "W"
 								self.grid[y+j][x+k].skin = "square"
 							end