I think I took that photo?
I'm jealous that you have that car now. Good buying mate. I had a good look at that car back in '09. Admittedly in now has 3 more years of life under it's belt, but it was in pretty good condition back then.
Let me put my paint vote in for baby blue also. That one you posted above looks awesome and I have always loved that colour on small 60's and 70's cars. Always wanted to do my Mk1 Corty that colour with a white roof, but car is now gone. That's something you could consider on the 20. The white roof thing was pretty popular back in the 60's. Not sure how it would look on a 20, but I'm sure you can mock it up in P/Shop. Would be something a bit different and I reckon it would look tops.