Separate color them from values

[kremich]

Currently when initializing graph one uses RingMeter structure. It has all the data and colors of the single ring. Better approach would be to setup the Graph with the title, colors and maxValue. The value itself should be variable and one should be able to modify it any time. This will be basis for animating graph from one value to another. I.e. from values set [0.5, 0.6, 0.7] to [0.75, 0.8, 0.79]. At this time animation can only be done from [0, 0, 0] to final values.