If you've created an attendance letter that includes highlighted/coloured text or a coloured table, you will need to export it before printing. This is because if you generate the letter then click the Print icon in the top right the preview removes the colour.
Here's an example.
To keep the colour, click the Export icon and download the letter to either Word or PDF and then print from there.
For guidance on creating Attendance Letters in Scholarpack please see - Creating Attendance Letters in Scholarpack