Screen Tinting in a Time System

[OS]

Hello, all! I need a quick bit of help with my tinting method for my Random Weather 7.0.
Here is my way of creating a screen tone change:

def create_new_tone
    il = tone_hour*10
    il += tone_minute/10
    tone = Tone.new(il,il,il,0)
  end
  
  def tone_hour
    ret = hour?(24) >= 12 ? -hour?(24) : hour?(24)
    return ret
  end
  
  def tone_minute
    if tone_hour >= 0
      return @current[1]
    else
      return -@current[1]
    end
  end

Unfortunately the tones are too far off. I tested this with 6:30 (which was very bright) and 10:30 (which was very dark). This isn't right because both numbers were AM, so the tones shouldn't have been so different (and ten shouldn't have been so dark.)

Does anyone have a different way to tint the screen every hour, at least? I would prefer it to use minutes as well, so that the tone is changing every 60 seconds, but I don't absolutely need it too.

If anyone has any ideas, please let me know as soon as possible.

Thanks.

 

[OS]

Never mind, ya'll. I had some extra time to test this morning and came up with a set of Tones that I think work just fine! They range from -100 to 20, and transition every hour. It looks pretty good, I think. RESOLVED.