It is now all buttoned up. 

It is still in my "patient waiting room"...as its case repair and repaint work is still pending.

I have gotten in the habit of leaving my "in-process" projects on the floor of my hobby room.  Cannot ignore them as I walk by them numerous times each day.

( My Hermes adding machine awaits a new metal paper spool (coming from Switzerland) and new ribbon on metal spools. )
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Hi Mike,

For me too...

Here is a photo of an original machine with the space-bar color.

I went with this lighter shade of blue...but as a back up...I have a darker, deeper blue that is very close to what the factory used...Krylon calls their color "Island Splash".  Might go to that if the current color does not grow on me this week.
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Here is another one on the TWDB Gallery pages with the same color scheme...and with the cream colored paper tray.

I guess some period print ads in color might give a clue to what color combinations were possible over the years this machine was produced. 

https://typewriterdatabase.com/1960-smith-corona-electric-portable.18645.typewriter

It hard to know for sure...without some samples of color print-ads from the times.

The "blue" space bars on the seafoam green machines could also be the result of a repair shop needing a replacement space bar and used what they had at time time on their parts machines.

The space bars are fragile.  No metal reinforcing strut on the bottom side of the plastic and they press fit onto the flat metal tangs (as key-tops do) rather than being held in place with a pair of small washers and screws.

Great.
A speedy typer?