Add opacity (transparency) to hover box / Allow it to be outside the plot

Plotly hover box has no transparency to it, which causes it to cover other data points, compromising the visual analysis of the data. Example:

Ideally it would allow box transparency like these one from dygraphs, which displays the hover text but does not cover/hide the region beneath it (http://dygraphs.com/tests/legend-values.html)

Additionaly, it could be great to have the possibility to show the tooltip/hover box information outside the plot, again to not cover any part of the plot and enable clear visual inspection. Another example from dygraphs:

Highcharts and dygraphs have those options as default.

There is some related discussion/request here: https://community.plotly.com/t/custom-hovertext-obstructs-plot-view-opacity-bottom-of-plot/9065

Changes like these would allow Plotly to be an excellent tool for financial plots and to be adopted by many more analysts from finance field.

Plotly is the best graphing tool in my opinion and I would like to stick to it, so I really appreciate if you can consider this request. Thank you for the awesome work.

ファイル、テスト、エントリーポイントは指定されていません。まずリポジトリの hover-box 実装を見つけ、リンクされたコミュニティディスカッションを確認してから、要求されている透明度とプロット外の動作を dygraphs の例と比較してください。プロットされたデータを隠すことなく、両方のホバー表示オプションが機能すれば完了です。