[The “Make you model” button is currently not working, you can just download the raw code and paste it in Makerlab or Openscad]
This is a customizable model and it can be customise under openscad or under Parametric model maker on Makerlab.

You can change the size of the box add and choose text or add special icons.
There is an option for multicolor print, right now the part/color will be hard to see inside the preview. When you export the file the coloured parts/text will be there, just dont forget to add color to them inside the slicer.
Let me know if you encounter any issues