4000D/5000D Black - % tint glass?

[Lmertens]

Hi,

I currently own a 4000D airflow and really love the dark tinted glass as it provides a sleek understated look and hides cable mess beautifully! Now, I want to try and mimic this perfect amount of tint on the pc of my wife (white NZXT H510). Since she is also loving it, I’m going to try and make her glass have the same tint using tinted foil as a little surprise.

If anyone knows how tinted the glass is (standard is in % of light getting through), that would be very much appreciated!

Thanks in advance!