Ok it may seem like a petty thing to ask, but it’s beginning to bug me.
How do you return a preset to it’s default unlit state?
this is quite a strange question 
search for config.xml on your HD
(Windows2000+ users have it under
[UserDir] - Application Data - ReNoise - 1.5)
and search for this string:
Property name=“mSelectedNodeName”
if you remove the content of the value=“removethis”, the setting will be deleted.
I understand that this is quite tricky, but your question is really strange, and nobody thought there could have been the need for such a function
It’s alright. I think I may have forgotten to take my medication. 
That’s beautiful. I didn’t realise a piece of software could bring me quite this amount of contentment.
For those of you who want to try this at home you might try inserting a “0” to replace what you deleted. Worked for me.