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Although ISO C++ does not support variable-length arrays, you seem to be using a compiler which supports them as an extension.

In the line

I'm not incredibly familiar with Vue, but I'm pretty sure the problem is as follows:

Instead of calling the function in the HTML, you need to pass it as a property. The difference is that if you add the brackets, the result of the function will be passed to VueJS, not the function itself. Then, you'll be able to access the arguments of the function just the way you'd expect.

EDIT

The name getCategoryForColor should have tipped me off, but what happens is actually not what you expect. The getCategoryForColor function expects to receive any string or value that represents that "category" to which the cell belongs. Those categories are then mapped to a colorScale function which makes sure a valid color is generated for every category, and that elements with the same category get the same value.

You actually jumped the gun a little on that bit, because you already specified what the color should be! So in order to fix that part, I also overwrote the color scheme to simply return whatever it was passed. Now, the correct colors are applied.

There are some steps to get there, using only endsWith is not a solution:

1- You need to extract all items from the DOM, they are the source of truth for your code to work.

2 - Parse the HTMLcollection into an array

3 - Select the itens that ends with 'rouges'

4 - Finally, you must set a way to not display those that doesnt ends with 'rouges'

My aproach is bellow:

The foreign key should be the primary key in the referenced table. I strongly recommend that you also use a name that is meaningful. So, I would that the first table be:

My solution thanks to Sean W's suggested reading:

Your lighting is not good, as HansHirse suggested, try normalizing the conditions in which you take your photos. There's, however, a method that can somewhat normalize the lighting and get it as uniform as possible. The method is called gain division. The idea is that you try to build a model of the background and then weight each input pixel by that model. The output gain should be relatively constant during most of the image. Let's give it a try:

Make sure you are using item.lower() and not item.lower. I would also use a dictionary, where the key is the name of the aisle, and the value is a list of items in that aisle.