you can make the aluminum scope body LOOK just like blued steel with some time and finesse. You left the AL black sit too long without buffing causing it to get chalky.
This method works the same on aluminum with aluminum black.
https://www.youtube.com/watch?v=0AIgRsbTa6Y
Of course if you idon'thave a lathe, you do it by hand, but the technique is the same.
this is for the older pewter flash hiders, but also the technique is the same and works with the aluminum ones and aluminum black:
https://www.youtube.com/watch?v=BH8sYEI2gqs