complete redesign: use nodejs on server instead of php - documentation to be updated

nodejs/node_modules/stylus/lib/functions/red.js

@@ -0,0 +1,33 @@
+var nodes = require('../nodes')
+  , rgba = require('./rgba');
+
+/**
+ * Return the red component of the given `color`,
+ * or set the red component to the optional second `value` argument.
+ *
+ * Examples:
+ *
+ *    red(#c00)
+ *    // => 204
+ *
+ *    red(#000, 255)
+ *    // => #f00
+ *
+ * @param {RGBA|HSLA} color
+ * @param {Unit} [value]
+ * @return {Unit|RGBA}
+ * @api public
+ */
+
+module.exports = function red(color, value){
+  color = color.rgba;
+  if (value) {
+    return rgba(
+      value,
+      new nodes.Unit(color.g),
+      new nodes.Unit(color.b),
+      new nodes.Unit(color.a)
+    );
+  }
+  return new nodes.Unit(color.r, '');
+};