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)...
Rising Sun Bio
2F "Brahma" + Lockright, tach, Warn 8274, FJ60 Power Steering,
no more Sanden OBA
1FZ-FE factory lockers +
Safari intercooled turbo, CDL switch, cup holder, Metric TLC leather, heated seats, JDM switches, PUMA OBA.
Warn M12000 waiting for a bumper.
Limited TRD 2UZ-FE SOLD