To color with a pen in Engpsh, you can say "color with a pen" or "use a pen to color." Here are a few other phrases that might be helpful:

"Draw with a pen"
"Ink a picture"
"Coloring with ink"

For example: "I pke to use different pens to color my drawings. It's a fun way to add some variety to my artwork." I hope this helps! Let me know if you have any other questions.