The array is in a format that can be directly used in BaseChart.gradientColor2 and DrawArea.gradientColor2. Its contents (in hex) is:
00 98E098 60 F0FFF0 B0 D8F0D8 100 98E098
See Color Specification on how colors are represented in ChartDirector.
ChartDirector 7.0 (Perl Edition)
perlchartdir.
Description
00 98E098 60 F0FFF0 B0 D8F0D8 100 98E098