René's URL Explorer Experiment

{"@context":"https://schema.org","@type":"DiscussionForumPosting","headline":"[ENH]: set facecolor and edgecolor alpha separately","articleBody":"### Problem\n\nI like making diagrams where my patch edge is solid but the fill is semi-transparent - in my case usually to fade out the color, but it's also useful to emphasize boundaries\r\n\r\n![image](https://user-images.githubusercontent.com/1300499/206788819-3670bbc3-3b6d-4974-b6cc-7abb7d4a7f34.png)\r\n\r\nSince alpha applies to the whole patch, the way I do this now is by converting my HTML colors into RGBs and appending an A\r\n\r\n```python\r\nedgecolor=x_color, facecolor=(*mcolors.to_rgb(x_color), .10)\r\n```\r\n\nETA: apparently I could also just do `facecolor = mcolors.to_rgba(x_color,  .10)`\r\n\n\n### Proposed solution\n\nAllow alpha to take a `(facecolor, fillcolor)` tuple for patch methods. As an example of prior art, we allow vectorized/separable alphas in imshow as of #14889","author":{"url":"https://github.com/story645","@type":"Person","name":"story645"},"datePublished":"2022-12-09T20:26:17.000Z","interactionStatistic":{"@type":"InteractionCounter","interactionType":"https://schema.org/CommentAction","userInteractionCount":0},"url":"https://github.com/24681/matplotlib/issues/24681"}