Paper Mate InkJoy Pens, Gel Pens, Medium Point (0.7mm), Assorted, 20 Count

I tested all colors and each of them is equally smooth and all worked well. The yellow doesn't really show up on any type of paper or color that I tested. It's pretty faint. I thought it might show up on dark colors but the only color that seemed to make it more visible was a light neon green sticky note. Fine to medium point tips. I like the circumference and texture of the pens. They feel sort of rubbery on the surface with a slightly indented dotted texture for better grip. I tested them just after I put hand cream on my hands so my test was not so effective because they felt a bit slick to me. The orange is toward red, and the pink is dark, also toward red. Red, purple, aqua, and black are all true colors. Green is more toward lime than grass, blue is more on the cyan side, and magenta has a purple tone. Sorry about the stationary with ghosted roses in the background in the photo - it's all I could find to write on to show colors. There is a "window" on the side of each pen so you can see the ink level. Nice feature.