I've upgraded from SE14 to 16 this week and noticed that Symbol coloring doesn't work at all anymore. Even though in my Appearance/Colors I have associated Symbole coloring scheme set to one of hte themes. Did you SE add a new ption that has Symbol coloring off by default or something? If so I can't find it.
here is SE info
SlickEdit 2011 (v16.0.2.0 64-bit)
Serial number: *******
Licensed number of users: Single user
License file: C:\ProgramData\slickedit\16\slickedit.lic
Build Date: August 11, 2011
Emulation: Vim
OS: Windows 7 x64
OS Version: 6.01.7600
Memory: 68% Load, 4179MB/6135MB Physical, 5063MB/12268MB Page File, 195MB/8388607MB Virtual
Shell Info: C:\Windows\system32\cmd.exe /q
Screen Size: 1920 x 1200, 1920 x 1200, 1680 x 1050
Project Type: No project open
Language: .cpp (C/C++)