Down arrow and up arrow status

I have to make an iOS app, where there are categories and I have to show the decrease and increase in status of particular category.

For decrease I used a red down arrow. For increase I used a green up arrow.

But in some categories, a down arrow is good for sales.

So I am stuck with what to do with the icons and colors.

My original approach was to change down arrow color from red to green. But the problem is, colorblind people will not understand.

Then I thought of placing emojis of smile and sad. For good it will smile, and for bad it will be sad. Down arrow and smile emoji together. However this would be unprofessional.

Please see this screenshot: