That would be Sky Blue 854, also affectionately known as Smurf Blue. Used from 1975 through 1980. Check here:
Looks like yours will buff out nicely.
'78 should have headrests and wing vent windows on the rear hardtop. Looks like those are missing from your pictures?
Oh - and we need to see more pics of your other rig(s)...
"Stay the Trail," "Tread Lightly," and "Leave No Trace" ethics
Rising Sun Bio
2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering,
soon to lose the Sanden OBA
to go back to factory emissions
Limited TRD 2UZ-FE FOR SALE SOON
Up next: Something that makes a funny whistling noise...