I am looking to change the sidebar color kibana and the pink background of kibana. I was attempting to follow this post: Theming Kibana with a Plugin but was unable to get it to work. I changed all of the colors.less files which are located in the below directories and then I deleted the optimization directory. I changed all of the pink colors to a random color to see if it would work. This did not work and was wondering if anyone knows what I am doing wrong?