I've animated the ExtraContent 3 with the free AnimateIt stack* by Tsooj Media. Refresh the browser to see the effect again.
With the AnimateIt stacks set you can very easily create cool and fun CSS3 based browser animations for a single stacks element, predefined theme elements and of course on all of your custom HTML element. This stacks set comes with over 50 predefined ready to use animations.

*You need the Stacks2 plugin for this. Stacks are not included in this theme.
nl2
gb2
The RapidWeaver Multi Language Stacks set is a powerful set of stacks featuring the jQuery based RWML System. Base task of the RWML System is to easily turn a single RapidWeaver project file into a Multi Language enabled website. So you no longer have to create another project file for each Language. It automatically adds the required HTML Lang(uage) attribute to your content. This is meant to assist search engines and browsers.
Click on the flags in the upper left corner.

It's not only for normal content elements as you are used to with most stacks and plugins. You can also use it to turn the Navigation Menu of your website into a Multi Language element and use it to Switch to another Language. Besides that the RWML System is smart enough to remember the chosen Language of your website visitors. So when they visit your website again it automatically shows the content in their Language.
I've put the flags in an extra ExtraContent area, read the Manual how I did this.
Rainbows can be caused by many forms of airborne water. These include not only rain, but also mist, spray, and airborne dew.
The rainbow is not located at a specific distance, but comes from an optical illusion caused by any water droplets viewed from a certain angle relative to the sun ray's. Thus, a rainbow is not an object, and cannot be physically approached. Indeed, it is impossible for an observer to see a rainbow from water droplets at any angle other than the customary one of 42 degrees from the direction opposite the sun. Even if an observer sees another observer who seems "under" or "at the end of" a rainbow, the second observer will see a different rainbow—further off—at the same angle as seen by the first observer.

A rainbow spans a continuous spectrum of colours. Any distinct bands perceived are an artifact of human colour vision, and no banding of any type is seen in a black-and-white photo of a rainbow, only a smooth gradation of intensity to a maximum, then fading towards the other side. For colours seen by the human eye, the most commonly cited and remembered sequence is Newton's sevenfold red, orange, yellow, green, blue, indigo and violet.
Een regenboog is te zien bij regen maar ook in de waterdruppels van een waterval, tuinslang of fontein en soms boven de branding in zee. Vanuit een vliegtuig en van een bergtop kan een regenboog als een cirkel zichtbaar zijn, wanneer geen horizon in de weg zit. Het licht wordt weerkaatst en gebroken tot een spectrum van de primaire kleuren die in elkaar overlopen.
Het middelpunt van de boog staat gezien vanuit de waarnemer recht tegenover de zon. Waarnemer en boog vormen samen een denkbeeldige kegel met de waarnemer op de punt van de kegel en de regenboog langs de boogrand van het grondvlak van de kegel. De boog heeft binnen de kegel een halve tophoek van 42 graden en een breedte van rood tot violet van 2 graden.

De kleuren van de regenboog worden traditioneel benoemd als (van buiten naar binnen): rood, oranje, geel, groen, blauw, indigo  en violet.
De volgorde kan onthouden worden als ROGGBIV. Uiteraard is er in werkelijkheid een continue verdeling van kleuren, die naadloos in elkaar overgaan en niet scherp te onderscheiden zijn.