'orange' is not a valid ctermfg

[stephen-zhao]

vim-orbital/colors/orbital.vim

Line 119 in b1f611c

hi Special ctermbg=bg ctermfg=orange cterm=NONE

Several lines of orbital.vim's highlight commands reference the named colour 'orange', which doesn't actually exist. This causes problems with loading your colour scheme.

The error I get is:

Error detected while processing /home/#####/.vim/bundle/vim-orbital/colors/orbital.vim:
line  119:
E421: Color name or number not recognized: ctermfg=orange cterm=NONE

[fcpg]

Changed it to darkyellow, but couldn't really test it properly yet.