Hi @adui, 

Thanks for your post! It seems like your document’s default line color has been set to red. To change it to the color of your preference (let’s say, black), please follow these steps:

• Ensure you have no lines selected on the canvas
• Navigate to the pencil icon at the Formatting toolbar above your canvas
• Select the color you’d like to set as the default one.

From the on, any new line you add to your canvas will be on that default color. I hope this helps!