The array is in a format that can be directly used in BaseChart.gradientColor2 and DrawArea.gradientColor2. Its contents (in hex) is:
00 9898E0 60 F0F0FF B0 D8D8F0 100 9898E0
See Color Specification on how colors are represented in ChartDirector.
ChartDirector 7.0 (Perl Edition)
perlchartdir.
Description
00 9898E0 60 F0F0FF B0 D8D8F0 100 9898E0