diff --git a/Art/Block1_002.xcf b/Art/Block1_002.xcf
index 5479661..bbb7687 100644
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diff --git a/Art/Cat_000.xcf b/Art/Cat_000.xcf
index 5727f04..2654e39 100644
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diff --git a/Art/Cat_001.xcf b/Art/Cat_001.xcf
index a7c99cb..d5e64eb 100644
Binary files a/Art/Cat_001.xcf and b/Art/Cat_001.xcf differ
diff --git a/Art/Spit0_004.xcf b/Art/Spit0_004.xcf
index 7ed7fab..00a9c66 100644
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diff --git a/Art/Spit1_005.xcf b/Art/Spit1_005.xcf
index 0f6d974..e278553 100644
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diff --git a/Art/Spit2_006.xcf b/Art/Spit2_006.xcf
index 35ee819..614d384 100644
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diff --git a/Art/block1_002.gif b/Art/block1_002.gif
index cccd503..e01aebb 100644
Binary files a/Art/block1_002.gif and b/Art/block1_002.gif differ
diff --git a/Art/cat_000.gif b/Art/cat_000.gif
index 57e6583..3aa9289 100644
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diff --git a/Art/cat_001.gif b/Art/cat_001.gif
index 14b512d..5077956 100644
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diff --git a/Art/spit0_004.gif b/Art/spit0_004.gif
index 27019b2..af2a532 100644
Binary files a/Art/spit0_004.gif and b/Art/spit0_004.gif differ
diff --git a/Art/spit1_005.gif b/Art/spit1_005.gif
index b43e37e..3f7e696 100644
Binary files a/Art/spit1_005.gif and b/Art/spit1_005.gif differ
diff --git a/Art/spit2_006.gif b/Art/spit2_006.gif
index 9a6306e..aed9eea 100644
Binary files a/Art/spit2_006.gif and b/Art/spit2_006.gif differ
diff --git a/Makefile b/Makefile
index a6074a2..492d0d4 100644
--- a/Makefile
+++ b/Makefile
@@ -16,7 +16,7 @@ ADDR=800
 PGM=gscats
 MRSPRITE=../MrSprite/mrsprite
 CHROMA=00ff00
-PALETTE=a4dffb a4dffb 008800 886611 cc9933 eebb44 dd6666 ff99aa 00ff00 ffffff b7b7b7 dddddd 0e7db1 000000 ffff00 ffff00
+PALETTE=a4dffb a4dffb 008800 886611 cc9933 eebb44 dd6666 ff99aa 00ff00 ff0000 b7b7b7 dddddd 0077bb ffff00 000000 ffffff
 SPRITES=SpriteBank
 REMOTESYMBOLS=-Wl $(shell ./ParseMapFile.py *.map)
 
diff --git a/SpriteBank00.bin b/SpriteBank00.bin
index 3ec2266..3b2ac5f 100644
Binary files a/SpriteBank00.bin and b/SpriteBank00.bin differ
diff --git a/gamemanager.s b/gamemanager.s
index bca8eef..fc88862 100644
--- a/gamemanager.s
+++ b/gamemanager.s
@@ -33,9 +33,10 @@ beginGameplay:
 	lda #3
 	sta SpriteBankBank00+3		; Tell compiled sprites what bank they are in
 	BITS16
-	
+
 	; Erase the screen
 	ldx #$0000
+	ldy #200
 	jsr colorFill
 
 	; Generate, compile, and clip terrain
@@ -332,7 +333,9 @@ fire:
 
 
 basePalette:
-	.word $0aef,$0aef,$0080,$0861,$0c93,$0eb4,$0d66,$0f9a,$00f0,$0fff,$0bbb,$ddd,$007b,$0000,$0ff0,$0fff
+	; Color 0 and 1 must both be sky blue. Compiled rendering uses PHD (which must contain $0000),
+	; and span rendering uses fill mode, so 0 can't be used there
+	.word $0aef,$0aef,$0080,$0861,$0c93,$0eb4,$0d66,$0f9a,$00f0,$0f00,$0bbb,$ddd,$007b,$0ff0,$0000,$0fff
 statusBarPalette:
 	.word $0888,$0aef,$0F00,$0861,$0c93,$0eb4,$0d66,$0f9a,$00f0,$0fff,$0bbb,$ddd,$007b,$0000,$0ff0,$0fff
 
diff --git a/graphics.s b/graphics.s
index 7ea6482..5e0f33f 100644
--- a/graphics.s
+++ b/graphics.s
@@ -1,18 +1,30 @@
 ;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;
 ; colorFill
 ; Fills the screen with a color (or two). Pretty fast, but not fastest possible
-; A 4:4:4:4 = Palette entries
-; X = Color to fill (doubled)
+; X = 4:4:4:4 = Palette entries to fill
+; Y = Scanline count (fills backwards to 0)
 ;
-; Trashes Y
+; Trashes A,Y,PARAML0,PARAML1
 
 colorFill:
+
+	; Calculate end of VRAM we're going to touch
+	sty PARAML0
+	lda #160		; Bytes per row in VRAM
+	sta PARAML1
+	phx
+	jsr mult16
+	clc
+	adc #$2000
+	dec				; A now holds address of highest byte we'll touch (e.g. $9d00-1 for full screen fill)
+	sta PARAML0		; Cache values for highspeed zone
+	sty PARAML1
+	plx
+
 	FASTGRAPHICS
-
-	lda #$9d00-1	; Point stack to end of VRAM
+	lda PARAML0
 	tcs
-
-	ldy #200
+	ldy PARAML1	
 
 colorFillLoop:
 	; 80 PHXs, for 1 line
diff --git a/gscats.2mg b/gscats.2mg
index 9c75122..f6e5e1a 100644
Binary files a/gscats.2mg and b/gscats.2mg differ
diff --git a/spritebank.s b/spritebank.s
index fce6a17..d5024af 100644
--- a/spritebank.s
+++ b/spritebank.s
@@ -8,7 +8,7 @@ DrawSpriteBank :
 	  	 JMP 	 (SpriteBankBank,X) 	 ; Bank Number Table
 	  	  	  	 
 SpriteBankNum :
- 	 .dbyt 	 $0200,$0100,$0500,$0000,$0300,$0600,$0400 	 
+ 	 .dbyt 	 $0100,$0200,$0600,$0000,$0300,$0500,$0400 	 
 	  	  	  	 
 SpriteBankBank :
  	 .addr 	 SpriteBankBank00,SpriteBankBank00,SpriteBankBank00,SpriteBankBank00,SpriteBankBank00,SpriteBankBank00,SpriteBankBank00