I haven't seen a gas wall oven before... a little dicey, IMHO, safety-wise, but I suppose it's no more dangerous than a slide in or drop-in gas range.
If it were early 50's late 40's rounded white ...
Already I have a harvest gold GE P7 single electric wall oven. It works great, but the yellow color really clashes with the black/stainless decor of the rest of the kitchen appliances (I already got rid of the harvest GE sxs fridge (worked ok but used 3 times the juice of a modern version), the harvest steel interior GE dw (bottom rusted out), and the harvest filter flow washer/dryer set (still have the washer). I'm planning on taking the door off at some point, sanding the finish (too bad, it's porcelain enamel) and having it powder coated a nice black or gray. Some day, no time soon. Maybe even re-porcelainized.