Morrisons pastel writing icing

I got to try these icing pens out because my brother made some cookies so we did some icing writing.

There are four colours, yellow, white, pink and blue.

To summarize they were not that sweet in taste and did the job as an icing however the pink and yellow were not bold enough to be seen as they were rather translucent.

However, these colours can be saved if you apply a white icing base and then apply the yellow/pink on top.