The Scratchpad uses the same font & syntax colouring from the Editor, but always has a white background.
This makes it unpleasant to use if using a light-text-on-dark-background colour theme for editors (as it becomes light-on-white in the Scratchpad).
e.g. Screenshot below shows the same file open in Editor (on left) and Scratchpad. The text on the right is almost illegible.
Implemented in OpenEdge 11.7.
+1, I'm using the zenburn theme, and for the same reason can't use the ScratchPad (it does have some other shortcomings too, like TAB key not working...)
I never use the scratchpad, I create an untitled.p and all the functionality of the editor is available.
We are working on to use Text Editor preferences, eg. background, foreground, line colors etc.
We are working on this to make it implemented in 11.7.