Hi Marc it was just a initial feeling even looking at the thumbnail.
I did not say it is a strong cast , just a slight one , and as always colors are subjective specially when it is just a small amount that is not "correct" ……….
I took the image into PS and measured the important colors like the blues /yellows /reds with the eyedropper set to LAB mode (that is how i measure my colors ) and all the readings for this colors are on the "cool" side of the color spectrum regarding these colors, so i decided to share my thoughts with you ……..
Take my view or leave it as is , it is yours , and i just only wanted to "help" , i repeat all personal . I do not think you need to recalibrate your system

, as long as you like the colors in your images you are good to go , most important i think.
Hope this helped how i got the idea that there is a slight cast
Regards Andreas