You can edit the color model in the template. The example code shows how you can use a DATA step to perform the edit.
data smell;
input Odor T R H @@;
label
T = "Temperature"
R = "Gas-Liquid Ratio"
H = "Packing Height";
datalines;
66 40 .3 4 39 120 .3 4 43 40 .7 4 49 120 .7 4
58 40 .5 2 17 120 .5 2 -5 40 .5 6 -40 120 .5 6
65 80 .3 2 7 80 .7 2 43 80 .3 6 -22 80 .7 6
-31 80 .5 4 -35 80 .5 4 -26 80 .5 4
;
ods trace on;
ods html body='b.html';
ods graphics on;
proc rsreg data=smell plots=surface;
model Odor = T R H / lackfit;
run;
proc template;
delete Stat.Rsreg.Graphics.ContourPanel;
source Stat.Rsreg.Graphics.ContourPanel / file='t';
quit;
data t(keep=l);
infile 't' end=eof;
input;
if _n_ eq 1 then call execute('proc template;');
_infile_ = tranwrd(_infile_, 'colormodel=TWOCOLORRAMP',
'colormodel=(red orange purple blue)');
call execute(_infile_);
if eof then call execute('quit;');
run;
proc rsreg data=smell plots=surface;
model Odor = T R H / lackfit;
run;
ods html close;
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