It all depends on what you want to do with the car. If you want to show the car and compete with other like automobilies and if your bank book can handle it - by all means bring it back to the original or any colour that you want. Remember - you will probably spend more getting to the last 3 points than the other 97 points.
However, I sign up to the philosophy of drive the car enough to warrant a new paint job. Depending on how much you drive it, that could take several years or a lifetime. In that time you may develop an appreciation for the mechanicals and the lovely lines of the car rather than a colour scheme that doesn't suit you today. See how the interior reacts to sun shine - is the restoration really up to par or are there things that you may need to fix in a couple years.
The real joy I get out of my car is driving it - I couldn't care less about the colour (I also have a bright green MGB and a purple Triumph motorcycle). I don't have original paint (well maybe I do in one spot), one seat has been replaced and is a bit odd to me and the interior is really showing its age - however I am not in a hurry to remedy any of those items as they are all part of the story that is my car. Everyone that looks at a car looks at it differently - some look at the pretty paint, some look at the quality of the paint job, some look at the mechanicals, some look at options, some look at the way the package all goes together, some look at the specifications like horsepower and torque........it may only matter when you are going to sell it.
I would suggest driving the car and see how you do with the car out in public. If you can't handle the colours it may be easier for you to sell the car and find one that is original than to restore it yourself or have it restored. If its right hand drive then you already have something special.
