Hi Daniel, wow thanks for this really quick response! I wasn't thinking on a friday that I would get an answer!
If you don't understand me, let me know. English isn't my main language, french is easier for me.
Here are 2 of the assets that I have. The yellow is slightly different from one to the other. It shouldn't. For the animated GIF, it is : 250/214/110 or #fad66e and for the call to action underneath is 249/214/110 or f9d66e. I know, it's really not that much. But I'll try to generate a new example where the difference is bigger and more obvious.
Thanks for your help