Just some more thought on the colored glass-aspect of this suggestion: In its current state coders decline this idea for the fact that the transparency-functions are lacking. What if you would add color only to glass panes? This seems more easy to achieve as you literally can't look side-ways into another colored transparent block that way, thus the current balance is kept. Seeing through colored glass and looking at other transparent entities should just do the same as with ice. Has this idea already been brought up? In that case I'd like to hear the results whether it is possible or not?