test.vim

" progressively check higher values... falls out on first "true"
" (note addition of zero ... this guarantees return from function is numeric
if strftime("%H") < 6 + 0
colorscheme darkblue
echo "setting colorscheme to darkblue"
elseif strftime("%H") < 12 + 0
colorscheme morning
echo "setting colorscheme to morning"
elseif strftime("%H") < 18 + 0
colorscheme shine
echo "setting colorscheme to shine"
else
colorscheme evening
echo "setting colorscheme to evening"
endif