CHANGE default colors

How do I change or delete those two colors in the default box under the "Colors and ANimations" Tab? I don't want the dark blue or purply brown color and can't find directions on how to get rid of them.

Just select a color you want to delete and press "<<" button

and how do I know the codes for the colors I want instead of blue and purple?

You don't need to know the codes. Just select a color by clicking on it in the color selection form.

I can't edit any colors using my ipad..am I not able to?

You are able to edit colors using iPad. Go to Colors and Animations section and add/remove colors.

If it doesn't work for you please make some screenshots and send to support to allow me dig deeper into the problem.

I don't see the key to remove colors <<

@ccbpurdy, there is no "<<" button anymore.
Click (or tap) on a color to remove it.

On iPad, if you touch a color it gets an x on it but nothing happens. If you double tap the x goes away. It works with right click on mouse but would like to do on iPad.

I do mine on iPad and I just tap the colour block I don't want and it disappears.