The highlight of my life

You're always by my side
You're the highlight of my life
You make everything look bright
You're my best friend
I don't want this to end
And when you're running low
I'll do anything to show
There's something left in you
You're my yellow and my blue
You're my pink and purple too
I don't know anyone who
Shines as bright as you
But when there's nothing left inside
And there's nothing I haven't tried
There's nothing I can do
But to acquire
A brandnew highlighter.