Programming language distribution overview not accessible
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[WCAG 1.4.1 Use of Color](https://www.w3.org/TR/UNDERSTANDING-WCAG20/visual-audio-contrast-without-color.html) requirements state:
**1.4.1 Use of Color:** Color is not used as the only visual means of conveying information, indicating an action, prompting a response, or distinguishing a visual element. (Level A)
The visualization for the distribution of programming languages relies mostly on color. Only when hovering over the respective area does a tooltip come up to show language and percentage. On mobile, the touch target for this can be as small as 8 pixels, which is almost impossible to hit.

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