diff --git a/doc-src/SASS_REFERENCE.md b/doc-src/SASS_REFERENCE.md
index ab1f51d7..9d354640 100644
--- a/doc-src/SASS_REFERENCE.md
+++ b/doc-src/SASS_REFERENCE.md
@@ -114,7 +114,7 @@ Available options are:
   or `:width = !main_width`.
   By default, either syntax is valid.
 
-{#cache-option} `cache`
+{#cache-option} `:cache`
 : Whether parsed Sass files should be cached,
   allowing greater speed. Defaults to true.
 
@@ -1032,7 +1032,7 @@ Although the default CSS style that Sass outputs is very nice,
 and reflects the structure of the document in a similar way that Sass does,
 sometimes it's good to have other formats available.
 
-Sass allows you to choose between three different output styles
+Sass allows you to choose between four different output styles
 by setting the `:style` option.
 In Rails, this is done by setting `Sass::Plugin.options[:style]`;
 outside Rails, it's done by passing an options hash with `:style` set.
diff --git a/lib/sass/script/functions.rb b/lib/sass/script/functions.rb
index 65e45b2c..12363392 100644
--- a/lib/sass/script/functions.rb
+++ b/lib/sass/script/functions.rb
@@ -61,6 +61,21 @@ module Sass::Script
 
     instance_methods.each { |m| undef_method m unless m.to_s =~ /^__/ }
 
+
+    # Creates a {Color} object from red, green, and blue values.
+    # @param red
+    #   A number between 0 and 255 inclusive
+    # @param green
+    #   A number between 0 and 255 inclusive
+    # @param blue
+    #   A number between 0 and 255 inclusive
+    def rgb(red, green, blue)
+      [red.value, green.value, blue.value].each do |v|
+        raise ArgumentError.new("rgb color value of #{v} encountered. Must be between 0 and 255 inclusive.") if v <= 0 || v >= 255
+      end
+      Color.new([red.value, green.value, blue.value])
+    end
+
     # Creates a {Color} object from hue, saturation, and lightness
     # as per the CSS3 spec (http://www.w3.org/TR/css3-color/#hsl-color).
     #
diff --git a/lib/sass/script/number.rb b/lib/sass/script/number.rb
index 8263ec9d..b37abb3e 100644
--- a/lib/sass/script/number.rb
+++ b/lib/sass/script/number.rb
@@ -155,9 +155,19 @@ module Sass::Script
     # @param other [Literal] The right-hand side of the operator
     # @return [Boolean] Whether this number is equal to the other object
     def eq(other)
-      Sass::Script::Bool.new(super.to_bool &&
-        self.numerator_units.sort == other.numerator_units.sort &&
-        self.denominator_units.sort == other.denominator_units.sort)
+      return Sass::Script::Bool.new(false) unless other.is_a?(Sass::Script::Number)
+      this = self
+      begin
+        if unitless?
+          this = this.coerce(other.numerator_units, other.denominator_units)
+        else
+          other = other.coerce(numerator_units, denominator_units)
+        end
+      rescue Sass::SyntaxError
+        return Sass::Script::Bool.new(false)
+      end
+
+      Sass::Script::Bool.new(this.value == other.value)
     end
 
     # The SassScript `>` operation.
@@ -253,7 +263,7 @@ module Sass::Script
 
     def operate(other, operation)
       this = self
-      if [:+, :-].include?(operation)
+      if [:+, :-, :<=, :<, :>, :>=].include?(operation)
         if unitless?
           this = this.coerce(other.numerator_units, other.denominator_units)
         else
diff --git a/lib/sass/tree/for_node.rb b/lib/sass/tree/for_node.rb
index 92600b70..02675130 100644
--- a/lib/sass/tree/for_node.rb
+++ b/lib/sass/tree/for_node.rb
@@ -28,14 +28,17 @@ module Sass::Tree
     # @return [Array<Tree::Node>] The resulting static nodes
     # @see Sass::Tree
     def _perform(environment)
-      from = @from.perform(environment).to_i
-      to = @to.perform(environment).to_i
-      range = Range.new(from, to, @exclusive)
+      from = @from.perform(environment)
+      to = @to.perform(environment)
+      if to.respond_to?(:coerce)
+        to = to.send(:coerce, from.numerator_units, from.denominator_units)
+      end
+      range = Range.new(from.to_i, to.to_i, @exclusive)
 
       children = []
       environment = Sass::Environment.new(environment)
       range.each do |i|
-        environment.set_local_var(@var, Sass::Script::Number.new(i))
+        environment.set_local_var(@var, Sass::Script::Number.new(i, from.numerator_units, from.denominator_units))
         children += perform_children(environment)
       end
       children
diff --git a/test/sass/engine_test.rb b/test/sass/engine_test.rb
index 67c47bdb..4803c2ef 100755
--- a/test/sass/engine_test.rb
+++ b/test/sass/engine_test.rb
@@ -76,8 +76,10 @@ class SassEngineTest < Test::Unit::TestCase
     "@if false\n@else if " => "Invalid else directive '@else if': expected 'if <expr>'.",
     "a\n  !b = 12\nc\n  d = !b" => 'Undefined variable: "!b".',
     "=foo\n  !b = 12\nc\n  +foo\n  d = !b" => 'Undefined variable: "!b".',
+    '@for !a from 1 to "2"' => '"2" is not an integer.',
     '@for !a from 1 to "foo"' => '"foo" is not an integer.',
     '@for !a from 1 to 1.232323' => '1.232 is not an integer.',
+    '@for !a from 1px to 3em' => "Incompatible units: 'em' and 'px'.",
     '@if' => "Invalid if directive '@if': expected expression.",
     '@while' => "Invalid while directive '@while': expected expression.",
     '@debug' => "Invalid debug directive '@debug': expected expression.",