Can I change the color of a pattern on Illustrator for iPad?

Hi! First time posting in here but I seem to be stumped... I'm trying to shift the color of a pattern on my iPad. For most things, I kind of prefer the hands on way that Illustrator works on the iPad. I'm curious if there is a way to change the color of the pattern on my iPad or if I will need to open it on my Mac? I know certain features are not quite available on the iPad version yet - but has anyone found a solution for this?

I tried googling but I just keep finding videos and references to how to edit swatches on the desktop version or how to create patterns on iPad. When I try to use the color changer, the pattern is shown but I don't see how to change the color of my pattern and tapping a color makes it a solid color rather than changing the color of the existing swatch.

Any help anyone could provide would be incredibly helpful!

Thank you so much!

Defiant Designer