IMO paint colors are as much a matter of the owner as anything...
However as noted if one wants to sell the machine some day... well a 'bright' color may not be the best thing.
Imagine answering a CL add, walking into a guys garage, and finding a bright Chartreuse (deep tone of hot pink) lathe... :roflmao:
I like two-tone, it makes for an interesting color scheme. Personally, I would not use a bright white... shows too much dirt.
I used to run a remodeling co... learned a bit about decorating: Where-ever the bright colors are, is where one's eye goes. So the deeper or less 'bright' tones need to be in areas less important (the stand, lower, etc). The brighter colors need to be where the work is being done.... which is also where the most oil and dirt collect.
Given the pictures of your shop area... I would suggest to pick up that off white/lite grey, with the blue accent.
Look at the paint scheme Quality Machine Tools uses on their 'Precision Matthews' machines:
http://www.machinetoolonline.com/
Might be a starting place for ideas.
Personally, I like to use oil base industrial paint (Rustoleum works for me), and stick with a color I can match later. I used 'Royal Blue' as my accent color.
IMO the more pictures you look at, the more ideas you can see. Them make a short list and look at them some more... the 'right' color 'for you' will become evident.
Please post some pics when you have it done... would like to see the finished restoration.