I use Lexar and Sandisk, but recently discovered that the Lexar colors are yellow-ish, specially with cloudy weather.
Last week I did a test indoor with both cards, (RAW is the same result), first one is Lexar, second Sandisk. (sorry for the unsharp one, due to low shutterspeed)
Beyond one being Lexar and one Sandisk, there is a 1-stop difference between the two images (1/8 vs. 1/4 second) that is more likely the explanation.
There just isn’t any technical reason to explain a difference in card brand and “coloration” (for lack of a better term). I’m not saying you don’t show a difference, just that you need to look somewhere other than the cards.

