Fixed Series color for HTML5 Bar Chart

Requirement:

Allot a set of fixed colors to certain categories. The color assigned to one category must not change depending upon the dynamic data. For example, if category A is red then red cannot be allotted to category B in case category A does not have any data.

Solution:

You can explicitly set a color for specific series with a bucket property and a series property contributor. Please find attached the JRXML report showcasing this use case. 

time_until_decision_jasper_2.jrxml