I\'m having trouble reading dark blue on black when I turn on syntax colours in vim.
How do I change some of the default colours or the colours of schemas like:
As stefanB says, you can change colorschemes with the :colo[rscheme]
command. There are a dozen or so built in schemes, and you can download thousands more from the Vim website.
I recommend installing the Color Sampler Pack - this is a selection of the 100 most popular colorschemes, and in Gvim it adds a menu that will let you switch between them easily.