Great combo! I picked up both LPs just for those songs. Walking on Sunshine is one of my all time top ten songs that are guaranteed to make you happy. You can't listen to that song and not smile. Melt with you was not very well known at the time. You had to be a bit of music nut to know the song but it later became a classic that literally everyone knows today.
I fell in love with Melt with You after hearing it in the 1983 cult film Valley Girl, which had Nicolas Cage’s first starring role.
Another version -- Chemical Warfare (Don't it Feel Good?)