Paint can colors

[Blobeh]

I was wondering how to get all of the paint can colors. When i press 'e' to open my paint menu thing, i can only go across in paint and not down or up.
How do i go up and down?

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[Blobeh]

Whops, never mind.
I just had an idea of how to do it and it worked.
Lol, srry bout that, lock the post

[Badspot]

For the record, mouse wheel.