If you can see the image (I can't) it shows what I'm talking about... sigh... image uploading has been a hit-or-miss thing lately... the upload seemed to work, but neither the preview nor final display shows it... sigh :)
In its current form, the option cannot be turned off and is not highly configurable.
The background syntax colour highlight is a transparent variation of the text highlight background colour. The only way to turn it 'off' is to also make the text highlight background colour white (and then make the text highlight foreground colour to something other than white for text highlighting purposes...).
I have opened CR #743754 as potential enhancement request to a future version of SQL Anywhere to include an option to configure the bracket highlight syntax colour (and also turn the feature on/off).
answered 19 Jul '13, 10:32