Backround Not Loading with ChangeColor

;HEADER, VARIABLE, AND CONSTANTS HERE
;-----------------------------------------------------------
;; DECLARE CONSTANTS
;-----------------------------------------------------------
STATETITLE     = $00  ; displaying title screen
STATEPLAYING   = $01  ; begin game
STATEGAMEOVER  = $02  ; displaying game over screen
STATEPAUSE     = $03  ; display pause screen
;MORE CONSTANTS

;RESET, CLRMEM, AND VLANKS

;-----------------------------------------------------------
;---------------Load Some Initial Values--------------------
;-----------------------------------------------------------
  JSR ResetValues

;LOAD PALETTES

;-----------------------------------------------------------
;---------------------LOAD BACKGROUND-----------------------
;-----------------------------------------------------------
  LDA #STATETITLE
  STA gamestate
  JSR LoadBackground
;LOAD ATTRIBUTES (THIS WILL BE MOVING ONCE I GET EVERYTHING WORKING)

  LDA #%10010000   ; enable NMI, sprites from Pattern Table 0, background from Pattern Table 1
  STA $2000
  JSR EnablePPU

;-----------------------------------------------------------
;-----------------------NMI ROUTINE-------------------------
;-----------------------------------------------------------
NMI:
  LDA #$00
  STA $2003       ; set the low byte (00) of the RAM address

  LDA #$02
  STA $4014       ; set the high byte (02) of the RAM address, start the transfer

  ;SOME NMI CODE
  JSR UpdateColor      ;;Update the Sprite Palette Color for new beer color
  ;SOME NMI CODE

  LDA #$00        ;;tell the ppu there is no background scrolling
  STA $2005
  STA $2005

;;;;;;;;;;;;;;;;;;GAME ENGINE;;;;;;;;;;;;;;;;;;;;;;;;;

GameEngine:
  LDA gamestate
  CMP #STATETITLE
  BEQ EngineTitle    ;;game is displaying title screen

  LDA gamestate
  CMP #STATEGAMEOVER
  BEQ EngineGameOver  ;;game is displaying ending screen

  LDA gamestate
  CMP #STATEPLAYING
  BEQ EnginePlaying   ;;game is playing

  LDA gamestate
  CMP #STATEPAUSE
  BEQ EnginePause     ;;game is paused

GameEngineDone:
  RTI

EngineTitle:
  LDA #$01
  STA ChangeColor
  LDA #$29
  STA attribute_RAM

  LDA buttons1_pressed       ; player 1 - start
  AND #%00010000  ; only look at bit 5
  BEQ GameEngineDone
    JSR StartEnginePlaying
    ;SOME CODE TO RESET VARIABLES

  JMP GameEngineDone

;;;;;;;;;

EngineGameOver:
  LDA buttons1_pressed       ; player 1 - start
  AND #%00010000  ; only look at bit 5
  BEQ GameEngineDone
    JSR StartTitle

  JMP GameEngineDone

;;;;;;;;;;;

EnginePlaying:
   ;SOME GAME PLAY CODE
  JSR handle_input
  JSR CheckGameOver                ;Go to Game Over Subroutine to see if the clock is 00, if yes, then display game over screen and disable sprites
  EnginePlayingDone:
  JMP GameEngineDone

;;;;;;;;;;;;;

EnginePause:
  LDA buttons1_pressed     ; player 1 - start
  AND #%00010000  ; only look at bit 5
  BEQ GameEngineDone
    LDA #STATEPLAYING
    STA gamestate

 JMP GameEngineDone


;-----------------------------------------------------------
;------------------START ENGINE PLAYING---------------------
;-----------------------------------------------------------
StartEnginePlaying:

  LDA #STATEPLAYING
  STA gamestate
    JSR DisablePPU
    JSR LoadBackground
    JSR EnablePPU

StartEnginePlayingDone:
  RTS

;-----------------------------------------------------------
;-----------------------START TITLE-------------------------
;-----------------------------------------------------------
StartTitle:

  LDA #STATETITLE
  STA gamestate
    JSR DisablePPU
    JSR LoadBackground
    JSR EnablePPU

StartTitleDone:
  RTS

;-----------------------------------------------------------
;----------------------GAME OVER----------------------------
;-----------------------------------------------------------
CheckGameOver:
  LDA time1
  BNE CheckGameOverDone

      LDA time10
    BNE CheckGameOverDone

        LDA #STATEGAMEOVER
        STA gamestate
          JSR DisablePPU
          JSR LoadBackground
          JSR EnablePPU_nosprites
CheckGameOverDone:
  RTS

;-----------------------------------------------------------
;----------------------UPDATE COLOR-------------------------
;-----------------------------------------------------------
UpdateColor:
  LDA ChangeColor  ;make a variable in zero page and set it to #$01 whenever you want this color to change.
  CMP #$01      ;if it's not #$01, ignore this subroutine and go to End.
  BNE .End
  LDA $2002     ;changing the palette (and background tiles)
  LDA #$3F
  STA $2006
  LDA #$11              ;address of specific color you want to change
  STA $2006
  LDA attribute_RAM              ;value of new color you want to change it to.
  STA $2007
  LDA #$00
  STA ChangeColor
.End:
  RTS

;-----------------------------------------------------------
;---------------------LOAD BACKGROUND-----------------------
;-----------------------------------------------------------
LoadBackground:
  LDA $2002
  LDA #$20
  STA $2006             ; write the high byte of $2000 address
  LDA #$00
  STA $2006             ; write the low byte of $2000 address
  ;;;;;;
  LDA gamestate
  CMP #$02
  BEQ LoadGameOverBackground

  LDA gamestate
  CMP #$01
  BEQ LoadMainBackground

  LDA gamestate
  CMP #$00
  BEQ LoadTitleBackground

  JMP LoadBackGroundDone

LoadGameOverBackground:
  LDA #LOW(GameOverScreen)
  STA AddrLow
  LDA #HIGH(GameOverScreen)
  STA AddrHigh
  JMP StartBGLoading

LoadMainBackground:
  LDA #LOW(MainScreen)
  STA AddrLow
  LDA #HIGH(MainScreen)
  STA AddrHigh
  JMP StartBGLoading

LoadTitleBackground:
  LDA #LOW(TitleScreen)
  STA AddrLow
  LDA #HIGH(TitleScreen)
  STA AddrHigh
  JMP StartBGLoading

StartBGLoading:
  LDX #$04              ; Loop X 4 times
  LDY #$00              ; Loop Y 256 times
LoadBackgroundsLoop:
  LDA [AddrLow],y
  STA $2007
  INY
  BNE LoadBackgroundsLoop
; Outer loop
  INC AddrHigh           ; increment high byte of address backg to next 256 byte chunk
  DEX                    ; one chunk done so X = X - 1.
  BNE LoadBackgroundsLoop   ; if X isn't zero, do again
  LoadBackGroundDone:
  RTS

;-----------------------------------------------------------
;----------------------RESET VALUES---------------------------
;-----------------------------------------------------------
ResetValues:
  LDA #$29
  STA attribute_RAM
  LDA #$00
  STA ChangeColor
;OTHER VARIABLES
  RTS

;-----------------------------------------------------------
;----------------------PPU----------------------------------
;-----------------------------------------------------------
EnablePPU:
  LDA #%00011110   ; enable sprites, enable background, no clipping on left side
  STA $2001
  RTS
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

EnablePPU_nosprites:
  LDA #%00001110   ; Disable sprites, enable background, no clipping on left side
  STA $2001
  RTS
;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;;

DisablePPU:
  LDA #$00
  STA $2001
  RTS