I'm thinking about adding a vignette effect to my game. I can make it to where there's no middle tones, but there will have to be transparency in the middle. Is that allowed?

You have two colors available, #c7f0d8 and #43523d. Any other color isn't allowed. However, you can play around with dithering for effects.

Using transparency, like changing the alpha of the colors to make different shades, is not allowed

Ok Thanks

You could try a sort of dithering to achieve a small vignette. Could be interesting depending on what you're going for?

Yeah, I think I'll just pass, because if my texture isn't allowed to have transparency, then there would have to be either the 2 textures all on it so it would obstruct too much of the screen. And if I rendered it behind everything, it would kinda destroy the effect of having a vignette