Thank you, SlugPower, -- that's exactly what I needed (sometimes, I read Temptalia, but I did never use the Dupe-Function) -- and, though most of the lines are difficult to get here (I'm in France/Germany/Austria), I can easily check the nearest MAC-Counter, and Shellpiece and Endless Frequency look rather good. This will be my first MAC-eyeshadow, then.Check out temptalia, she usually has lists of comparisons. I believe the one you're talking about is shade #1 (click "check dupes"):
Chanel Affresco #1 Multi-Effect Eyeshadow Review & Swatches
If you can check them at a store, it would be even better. So look for the ones classed as "permanent". According to this there is Cheeky from Colour Pop for example.
If it's not #1 , check which one is here:
Chanel Affresco Les 9 Ombres Multi-Effects Eyeshadow Palette Review & Swatches
Thank you again, and Happy Easter!