Updated to Colour Maps 8.0

[pfuchs]

Hi Chadagreene,

I've taken the liberty of updating to 8.0, I've left the 7.0 files in so that it would be easy to revert in case a user wants to use the old version, but would suggest removing those files moving forward.

Let me know if there are any concerns with the modifications! I've used a slightly different approach to load the .mat files which could be more robust to additions / renaming of color maps. The "drawback" right now is that also the O version (i.e. romaO etc.) of the color maps are loaded, which weren't in the previous, and perhaps those might break other functionality.

I've checked the regular functionality of the code and it all still seemed to work with my additions!

Best wishes,

Patrick Fuchs

fixes #2

[chadagreene]

Thanks for doing this @pfuchs. I'm swamped right now with other stuff, but I will take a close look soon.