All prompts from the category 'All about colors' are based on color names. The number behind is the hexadecimal code for the color. This might be interesting in case you plan to do graphic works; if you write fics or poems you can simply ignore them and just work with the prompt itself.

All prompts are open for every kind of interpretation, so don't worry too much about it. As long as you can explain the connection between your work and the prompt everything is fine.