<h1 dir="auto">Description of the new feature/enhancement</h1>
<p dir="auto">Using the mouse paste mechanism (regardless of right mouse, middle mouse or whatever mouse) on an unfocused terminal window / split-pane should focus <em>and</em> paste. Currently it focuses on windows and does nothing on panes.</p>
<p dir="auto">Paste in window is currently: right click (or well, left click works as well for focus) + right click. Paste in split-panes is: left click + right click.</p>
<p dir="auto">I only want to click once (regardless of middle mouse or right mouse or doing a rain dance in front of the camera) and not several times to paste text.</p>
<p dir="auto">Also belong together with <a class="issue-link js-issue-link" data-error-text="Failed to load title" data-id="441331985" data-permission-text="Title is private" data-url="https://github.com/microsoft/terminal/issues/524" data-hovercard-type="issue" data-hovercard-url="/microsoft/terminal/issues/524/hovercard" href="https://github.com/microsoft/terminal/issues/524">#524</a> function and use wise, since no-click-copy and single-click-paste are two of the best mechanisms out there <g-emoji class="g-emoji" alias="+1" fallback-src="https://github.githubassets.com/images/icons/emoji/unicode/1f44d.png">👍</g-emoji></p>

<h1 dir="auto">Proposed technical implementation details (optional)</h1>
<p dir="auto">I haven't looked at the cose base, but I imaging it is a case of looking at how mouse-events are handled in focused contra unfocused windows and split-panes.</p>
<h1 dir="auto">Environment</h1>
<div class="snippet-clipboard-content notranslate position-relative overflow-auto" data-snippet-clipboard-copy-content="Windows build number: 18362.239
Windows Terminal version (if applicable): 0.3.2142.0"><pre lang="none" class="notranslate"><code class="notranslate">Windows build number: 18362.239
Windows Terminal version (if applicable): 0.3.2142.0
</code></pre></div>
<h1 dir="auto">Steps to reproduce</h1>
<p dir="auto">Open Windows Terminal in dark mode.<br>
Add keybindings to split a tab into multiple panes. Ex:</p>
<div class="highlight highlight-source-json notranslate position-relative overflow-auto" dir="auto" data-snippet-clipboard-copy-content="            {
                &quot;command&quot;: &quot;splitHorizontal&quot;,
                &quot;keys&quot;: [
                    &quot;ctrl+shift+-&quot;
                ]
            },
            {
                &quot;command&quot;: &quot;splitVertical&quot;,
                &quot;keys&quot;: [
                    &quot;ctrl+shift+|&quot;
                ]
            },"><pre class="notranslate">            {
                <span class="pl-ent">"command"</span>: <span class="pl-s"><span class="pl-pds">"</span>splitHorizontal<span class="pl-pds">"</span></span>,
                <span class="pl-ent">"keys"</span>: [
                    <span class="pl-s"><span class="pl-pds">"</span>ctrl+shift+-<span class="pl-pds">"</span></span>
                ]
            },
            {
                <span class="pl-ent">"command"</span>: <span class="pl-s"><span class="pl-pds">"</span>splitVertical<span class="pl-pds">"</span></span>,
                <span class="pl-ent">"keys"</span>: [
                    <span class="pl-s"><span class="pl-pds">"</span>ctrl+shift+|<span class="pl-pds">"</span></span>
                ]
            },</pre></div>
<p dir="auto">Open a profile that has a dark background, like black or something close to that, ex, Campbell theme, where background is #0C0C0C.</p>
<p dir="auto">Split the tab.</p>
<h1 dir="auto">Expected behavior</h1>
<p dir="auto">To be able to easily distinguish the pane separator.</p>
<h1 dir="auto">Actual behavior</h1>
<p dir="auto">In dark mode the pane separator is hard to see due to low contrast with surrounding background. Example:<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/4239171/62805059-b45dea00-baa3-11e9-80c4-e97ffaebcb5f.png"><img src="https://user-images.githubusercontent.com/4239171/62805059-b45dea00-baa3-11e9-80c4-e97ffaebcb5f.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto">In comparison, in light mode the separator is very visible:<br>
<a target="_blank" rel="noopener noreferrer nofollow" href="https://user-images.githubusercontent.com/4239171/62805092-d3f51280-baa3-11e9-9d73-756e141ae1fe.png"><img src="https://user-images.githubusercontent.com/4239171/62805092-d3f51280-baa3-11e9-9d73-756e141ae1fe.png" alt="image" style="max-width: 100%;"></a></p>
<p dir="auto">Ideally, the color of the separator should take into consideration the surrounding background in order to show up with enough contrast to be visible in any combination.</p>