Hi,
First of all, I just wanted to thank you for this great theme, I use it on all of my vscode setups and it's been great. I've recently started working on Mac however and I noticed a problem with the code editor background. Some parts of the background use a different gray than others.
I don't have much experience in theme making but this is what I figured out. It looks like there's a semi-opaque zone going above the editor's background but I wasn't able to find it in the inspector. However I noticed that if I comment out the .monaco-editor background then it becomes one color again.
Here's a screenshot of the problem:
Here's what it looks like with the monaco-editor background commented out:
Let me know if you need more details or if I can help in any way and thanks again!