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Your voltage is waaaay too high by my estimation. You should get the full rainbow of colors before you reach 60 volts. The colors will repeat at higher voltages after that.
Distilled water is preferred because who knows what minerals are in your tap water? But, that's not the source of your current problem.
Bright colors will come only after you do very good finish work on the ti. Rough surfaces give only pastel colors.
My guess is that there is something wrong in your anodizer or in your setup. Your description of how the color progresses makes me think your amperage is super low (you certainly have plenty of voltage) or your chemistry and setup are less than optimal. Can you show us the whole setup and tell us what you used for the various parts? Did you have to substitute abything for something you couldn't find?
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