JSL: How to get the nice ROW LEGEND colors without the row legend?

[#1]

So here's a question. I'm trying to script the formatting of a fresh data table and Fit YbyX but hitting a roadblock on the RowLegen and coloring. 

Selecting "Row Legend" automatically colors the points and the source data table appropriately and adds the legend.

The problem I'm running into is that the Quantiles plot creates it's own legend that I can't seem to turn off, and it does not actually color-code the points in the chart or the source data table.

So question: How to turn off the Quantiles legend OR do the Row Legend formatting but then turn it off?

	//Quantiles plots
    Quantiles( 1 ),
    Plot Actual by Quantile( 1 ),
    Line of Fit( 0 ),

//row legend by chamber
		Dispatch(
			{},
			"Oneway Plot",
			FrameBox,
			{Marker Size( 6 ), Marker Drawing Mode( "Normal" ),
			Row Legend(
				:TOOL_PROCESS_CHAMBER,
				Color( 1 ),
				Color Theme( "JMP Default" ),
				Marker( 0 ),
				Marker Theme( "" ),
				Continuous Scale( 0 ),
				Reverse Scale( 0 ),
				Excluded Rows( 0 )
				)
			}
		),

[#2]

I'm not exactly sure what is the end-goal what you want here, but maybe in this case using Rows menus Color or Mark by column would work?

Fit y by x with quantile plot:

Rows menu selection:

Color or mark by column menu:

End result: