Colours on Illustrator suddenly going faded and dull.
This is the 2nd time this has happened to me now. I've been working on an illustrator file for a while and it has been fine up until today when the colours suddenly go really dull (it's an RGB file and never changed this) along with the swatches. All the artwork has changed to a much more dull version of itself and everytime I change it back to it's normal colour it fades gradually over time whilst I'm working on it.
This is what suddenyl happened to my swatches, the same thing happened last time too:

Has anyone else had this problem and does anyone know a way to fix it?
Many thanks
