《Iridescent》是由林肯公园演唱歌曲。该曲收录于林肯公园2010年9月10日发行的专辑《a thousand suns》中。该曲是电影《变形金刚3》的主题曲。

Iridescent（彩虹）是林肯公园第4部专辑《A Thousand suns》中的12首歌,2011年4月被定为电影《变形金刚3》的主题曲，并将重新拍摄MV。

在林肯公园的官方网站上，乐队发表了一份声明，该声明中写道：“《Iridescent》这首歌曲在我们的现场表演中是观众最喜欢的歌曲之一，所以我们很高兴导演Michael Bay能够使用我们的这首歌曲。”

《Iridescent》收录在林肯公园《A Thousand Suns》专辑中。在前两集的变形金刚系列电影中，分别使用了林肯公园的《What I've Done》和《New Divide》作为主题曲。迈克尔.贝在接受采访时说：“上两集的变形金刚电影当中所使用的都是林肯公园乐队的畅销单曲，《Iridescent》也会获得同样的成功。”

《彩虹光芒》是收录在林肯公园2010年专辑《烈日千阳》（A thousand Suns）中的一首歌曲，旋律舒缓，歌词简练，悲伤之中透露着希望，整体给人一种比较忧伤的文艺范的感觉，在林肯公园的歌曲中，算是非常抒情的一首。在为《变3》重新编曲的混音版本中，虽然着重加强了节奏，但与此前气势磅礴、金属感极强的《What I' ve done》与《New Divide》相比，《彩虹光芒：混音版》还是显得比较抒情，给人一种完全不一样的感觉，不知道这是不是意味着《变3》会在整体风格与情绪基调上，相较前两部有不小的变化。

When you were standing in the wake of devastation

When you were waiting on the edge of the unknown

And with the cataclysm raining down

You were there impossibly alone

Do you feel cold and lost in desperation

You build up hope but failure's all you've known

Remember all the sadness and frustration

And let it go let it go

And in a burst of light that blinded every angel

As if the sky had blown the heavens into stars

You felt the gravity of tempered grace

Falling into empty space

No one there to catch you in their arms

Do you feel cold and lost in desperation

You build up hope but failure's all you've known

Remember all the sadness and frustration

And let it go let it go

Do you feel cold and lost in desperation

You build up hope but failure's all you've known

Remember all the sadness and frustration

And let it go

Let it go

Let it go

Let it go

Let it go

Do you feel cold and lost in desperation

You build up hope but failure's all you've known

Remember all the sadness and frustration

And let it go let it go