The new colour was chosen by a more suitable procedure. I went to https://www.w3schools.com/colors/colors_converter.asp and entered the colour of the links on the current gitea theme on envs.net (which is #87ab63). Then, I copied the HSL version (hsl(90, 30%, 53%)) and pasted it. Then, I adjusted the lightness (L) portion from 53% to 4%, and got the colour value in hex #0a1400. This preserves the exact hue and saturation of the theme, while only decreasing the lightness. The previous colour was pure green, which doesn't match the theme perfectly.
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