Optimistic Lyrics
His heart was tickin' click tick tick
Synthetic hopes of a different day
Sparks flew across his veins
The DJ is spinning wig, wig, wig
Colourvision with a blurry view
That's life if he just knew
When he is dreaming, while he sleeps
His life becomes worth living
When he is dreaming, while he sleeps
Monday morning his life is gone
The world is turning dark again
His fellow workers are alive again

"He was feeling optimistic " -Speaks for itself "His heart was tickin' click tick tick " -He felt excited? "Synthetic hopes of a different day " -Basically dreaming about a better life "Sparks flew across his veins" -He was having hear palpitations or just felt excited.
"The stars are shining from a light engine" -he's letting his inner light shine. Letting loose his inner creativity. Or he's at a rave. "The DJ is spinning wig, wig, wig" -He's listening to music, feeling energized, or the DJ is just spinning "Colourvision with a blurry view" -Overly hopeful, with no clear vision. Or he's intoxicated. By optimism? "That's life if he just knew" -I'm thinking they just couldn't think of a word to rhyme with view. He's hopeful for a new life I guess.
"His life becomes worth living When he is dreaming, while he sleeps" -In this state of blind optimism, he has found a reason to keep going.
"Monday morning the lights are on Monday morning his life is gone" -As he starts the work week, reality creeps in. He only feels alive when he is able to dream on his own time, and feel like his life is his own. Not somebody else's.
"The world is turning dark again His fellow workers are alive again" -he's basically sectioned out his life. That of the dark and dreary world of monotonous labor, and that of the hopeful color filled weekend. He doesn't want to acknowledge his work life because it's not what he is meant for. His dream is supposed to be his reality.