What I was getting at is that in my opinion you can get away with playing more or less anything as longer as you can do one or all of the following:

Play it like you mean it
Resolve any 'dodgy' notes back to chord tones
Bend any 'dodgy' note(s) back to something in key

I tend to favour options 1 & 2. Its a fine line between a collosal screw up and musical genius in my opinion. Add some chromaticism to your playing, but end the phrase on a chord tone to resolve it best (so if playing in C for example, you'd end the phrase on a C,E or G) or at least a note that's in the scale...

A few 'outside' notes are what give our favourite players their unique sounds. If everyone stayed in minor pentatonic, it would all be pretty samey....