It is possible to decorate headwear with a logo, but it will look better if you have a good logo. The logo should be in the same color as the hat or cap. It doesn't matter if it's black or white, but it does need to be dark so that you can see what it looks like. Visit this
https://masterbundles.com/templates/pre ... int/canva/ site for best logos. You can also make a custom design for your cap by putting in your own artwork or pictures. This is great when you want something more personal than just an ordinary logo that everyone else has on their hats.