Scapple won't change text colour

I highlight the text within boxes on the mind map, change the colour and it shows initially but then as soon as I’ve clicked off it, it goes back to black. I’ve tried various work arounds to no avail. Please help! thank you.

You may be running into a bug with the inspector not closing notes for editing before using it. Bear in mind there is no need to select the text to change the colour of the note’s text, it all uses one colour, so just click on it without editing it. That should work better.