I formatted the colaxis's data but I cannot use in the proc sgpanel;
ods escapechar='~';
proc format lib=work;
value col
2007 = "~{style [color=black] 2007}"
2016 = "~{style [color=black] 2016}"
2008 = "~{style [color=white] 2008}"
2009 = "~{style [color=white] 2009}"
2010 = "~{style [color=white] 2010}"
2011 = "~{style [color=white] 2011}"
2012 = "~{style [color=white] 2012}"
2013 = "~{style [color=white] 2013}"
2014 = "~{style [color=white] 2014}"
2015 = "~{style [color=white] 2015}"
;
run;