Revive the tween experiment

[fweiss]

Somehow this got lost over time. It's suppose to scroll a phrase and use tweening to soften the jerkiness of the scroll.

[fweiss]

One mitigation of jerky scroll is to add a background. I think this lets the eyes keep a frame of reference.

I thought of this when thinking of how tweening would add dimmer pixels around a bright one to make the movement softer.

Changing the colors may help as well.

[fweiss]

Committed and merged a simple fix. Leaving issue open for possible future fix with actual tweening.