[Enhancement] Whitespace color is way too similar of the pressed key

[guspimentel]

I've noticed that I often make mistakes by forgetting to press space after typing a word. I've noticed that the tint of Whitespace looks very similar—if not identical—to the color of the Good Input, which might be why it’s easy to miss. Perhaps using a different shade of gray for the space marker would make it more distinct.

Dark Theme

Light Theme

EDIT I've just find out that you can create custom themes now. So I'm able to self-fix it 😂