Dianosing lack of colour highlighting

[Chris Green]

Well I have vile running OK on my phone running termux but I can't get
colour syntax highlighting to work.

I feel as if I have copied all the required configuration files across
from my Linux systems where colour highlighting works OK,  However, no
colours.

The terminal can display in colours as dircolors works when running ls.

So how to diagnose this?

-- 
Chris Green