Changing topic shapes' color

Most of my topic shapes are not black but dark grey. There is a slight variation in colour between the earlier ones and the later ones and then some of the later ones are just black. I need them to all be just black as I am adding images with a black background. How do I switch off the colour variation?

Thanks :slight_smile:

Hello @w_pun, can you please send a screenshot of the problem you’re experiencing? You can change the color of the topic shapes in the top toolbar. First you’ll need to click on the topic, then you’ll see the topic color menu appear. Please feel free to reach out to us if you need further assistance.