Add color options for appearance in IOS and Mac app#26

Adding some basic color options like red, green, blue, yellow or a color pallet where you can pick your own color to make the user interface more colorful. The clean and minimalistic design is great but on days I need some journaling or breathing exercises the most, some color in the user interface will boost my mood.

I agree, I would really like that too

I would love to see calming colours, like beige / brown / khaki instead of the typical really bright and vibrant colours, as the muted ones are more calming