PHA		72		; Push accumulator on stack to save
	TXA		138		; Transfer X register to accumulator
	PHA		72		; Push accumulator on stack to save

	LDX 203		166 203		; Load X register with mode line counter
	LDA 1576,X	189 40 6	; Load accumulator with color value
	STA WSYNC	141 10 212	; Wait for horizontal blank
	STA 53274	141 26 208	; Write color to background register
	INX 		232		; Increase the mode line counter
	STX 203		134 203		; Store counter in zero page 203
	CPX #10		224 10		; Are we done coloring mode lines?
	BNE EXIT	208 4		; If no, reset registers & exit to BASIC
	LDA #0		169 0		; If yes, reset mode line counter to 0
	STA 203		133 203		; Store counter in 203 for new screen

EXIT	PLA		104		; Get X register from stack
	TAX		170		; Reset X register 
	PLA		104		; Reset accumulator from stack
	RTI		64		; Return to BASIC from interrupt

1010 DATA 72,138,72,166,203,189,40,6,141,10,212,141,26,208
1020 DATA 232,134,203,224,10,208,4,169,0,133,203
1030 DATA 104,170,104,64