[i18n] Update chart coloring functions to handle i18n strings (#826)
[i18n] Update chart coloring functions to handle i18n strings (#826)

The former method leaves many charts in a deep purple, since most of the other languages have characters that are above the Latin-1 range. This brings the label into stable position between a-z so pages should look more colorful again (esp in ru, hi, ja, ko). 

Note that this will change the colors for the en charts as well. Group bar chart colors remain unchanged.
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