The only two colors that work well are black and red. All other colors barely show up on whiteboard however all colors are easy to wipe from the board. I will be returning them all.
There were 2 blacks and no yellow which I guess would be hard to see. The points were nicely shaped so that things were not written too large. The colors were not quite as vibrant as I had hoped they would be.
I was excited to try these out in the hope that they would be great. The out put of ink is very light. It’s almost like grayscale! I will have to try another brand.