title: Change the mouse-select color in Jupyterlab 3
body: <p>I want to change the color of selected/highlighted text by mouse in input cells in Jupyterlab 3. I am using the light theme, however the highlighted text appears difficult to read in input cells. If I hightlight text with my mouse in the output cells, it is absolutely fine. Please see the attached image. Ideally I want both of my highlights have the same light blue color.</p>
  <p><a href="https://i.stack.imgur.com/4Fwgc.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/4Fwgc.png" alt="enter image description here" /></a></p>
  <p>The extensions I am running are below. I have only 3 different themes - light, dark, and darcula. Jupyter lab is version v3.0.16. The complete stack is Jupyterhub with dockerspawner on Ubuntu 20.04.2. I am using Google Chrome browser on Win 10, the same problem happens in Edge.</p>
  <p><a href="https://i.stack.imgur.com/TMawP.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/TMawP.png" alt="enter image description here" /></a></p>