Hey there, when you say "artificial coloring agent", I guess you have images. Right?

i mean like..... sunset yellow FCF , tartrazine, carmoisine, ponceau 4R, brilliant blue FCF , and fast green FCF

As Jorge G Pires mentionned, if you're working with images it should be a fairly easy task. See e.g. https://towardsdatascience.com/image-color-identification-with-machine-learning-and-image-processing-using-python-f3dd0606bdca

I would recommend JavaScript instead, no Python! see my preprint, no need of codes, and expertise:

https://www.biorxiv.org/content/10.1101/2023.06.13.544741v1

You can build a model just using your browser, I am opened to collaborations!