Updating the Look and Feel through the jira-config.properties doesn't work

Issue Summary

As per Advanced Jira application configuration, default values for Jira's available advanced configuration options are stored the jpm.xml file, and the jira-config.properties should be used to override those values. However, the values for the look and feel in Jira are not changed accordingly in the interface after applying them to jira-config.properties.

Steps to Reproduce

1. In a fresh Jira installation (without modifications to the look and feel), add a jira-config.properties file to the Jira Home folder.
2. Add the following line:

   jira.lf.top.bgcolour=#ffffff
   

3. And restart Jira

Expected Results

The Header Background Colour would be white as defined in the jira-config.properties file (which would change the default color for this property, which would then be possible to override through the UI).

Actual Results

There is no change in the colour. However, the Header Background Colour shows #ffffff in the Look and Feel page.

Workaround

• Manually change the colour in the Look and Feel page