^M present in some colorschemes

[GoogleCodeExporter]

What steps will reproduce the problem?
1. :colorscheme dw_purple

What is the expected output? What do you see instead?
Change of colorscheme to dw_purple. Instead vim errors:

Error detected while processing /home/costis/.vim/colors/dw_purple.vim:
line   10:
E492: Not an editor command: ^M
line   11:
E474: Invalid argument: background=dark^M
line   12:
E411: highlight group not found: clear^M
line   13:
E15: Invalid expression: exists("syntax_on")^M
line   67:
E171: Missing :endifEnter one-line summary


What version of the product are you using? On what operating system?
Latest, Arch Linux

Please provide any additional information below.
This also happens to other colorschemes, like nightwish, but I do not have a 
complete list. It is solved running dos2unix on the selected (or better all :) 
) files  (http://linuxcommand.org/man_pages/dos2unix1.html)

Original issue reported on code.google.com by [email protected] on 9 Apr 2015 at 5:49