colors: fix using list, silly auto-use.

basis/colors/gray/gray.factor

@@ -1,6 +1,6 @@
 ! Copyright (C) 2008 Eduardo Cavazos.
 ! See http://factorcode.org/license.txt for BSD license.
-USING: colors kernel accessors ;
+USING: accessors colors kernel math ;
 IN: colors.gray
 
 TUPLE: gray < color { gray read-only } { alpha read-only } ;

extra/colors/cmyk/cmyk-docs.factor

@@ -1,5 +1,5 @@
-
-IN: colors.cmyx
+USING: help.markup help.syntax ;
+IN: colors.cmyk
 
 HELP: cmyka
 { $class-description "The class of CMYK (Cyan, Magenta, Yellow, Black) colors with an alpha channel. All slots store values in the interval " { $snippet "[0,1]" } "." } ;

extra/colors/cmyk/cmyk.factor

@@ -1,7 +1,8 @@
 ! Copyright (C) 2012 John Benediktsson
 ! See http://factorcode.org/license.txt for BSD license
 
-USING: accessors colors kernel math math.order ;
+USING: accessors combinators colors colors.gray kernel math
+math.order ;
 
 IN: colors.cmyk