Then print color ink, so the color rendering will be higher.
There is another important point.
When you print something on leather,
Don't add too much water to the ink.
Too much water is easy to seep out.
I just printed a lot of T-shirts with my classmates a while ago.
I am quite experienced.
Ordinary silk screen printing places are all ordinary ink.
Therefore, white is generally used as the background color.
But be extra careful when aligning up and down ~