Filter_Darken_Color:
    {
        STA $00 ;Original Color
        AND.w #$001F : !SUB $06 : INC;Red Mask on original color and add value of brightness onto original color

        CMP.w #$0002 : !BGE .red_not_zero ;If red <= 2
            LDA.w #$0002 ;red = 0
    .red_not_zero

        STA $02 ;Store new Red

        LDA $00 : LSR #05 : AND.w #$001F : !SUB $06 ;Load original color with Green Mask and add value of brightness

        CMP.w #$0002 : !BGE .green_not_zero ;If green <= 2
            LDA.w #$0002 ;green = 2
    .green_not_zero
        ASL #05
        STA $04 ;Store new Green

        LDA $00 : AND.w #$7C00 : LSR #10 : !SUB $06 ;Load original color with Blue Mask and add value of brightness

        CMP.w #$0002 : !BGE .blue_not_zero ;If blue <= 2
            LDA.w #$0002 ;blue = 2
    .blue_not_zero
        ASL #10
        ORA $02 : ORA $04 ; Load Blue, ORA Red, ORA Green
        RTS
    }