Hello File tab color isn't save in project file, but in PSCache5.bin file along other individual file information. In case when Save file state in program settings / Files is enabled
File tab color can be set in highlighter settings too - in this case it's valid for highlighter files and you can make different tab color for different highlighters. -- <https://forum.pspad.com/read.php?2,78463,78464> PSPad freeware editor https://www.pspad.com
