Improve website in several small ways

- Mention moon hover on color tag in design explorer
- Dependency on ncurses is a technical rather than a functional change
- Document new standard tags 'color' and 'unicode'

_data/designs-tag-descriptions.yml

@@ -4,6 +4,7 @@ tag_descriptions:
     box: 'go around the input text.'
     color: |-
         feature box shapes colored by ANSI escape codes.
+        <p>Hover with your mouse cursor over the moon icon to see a dark background.</p>
         <div class="alert alert-info">
             <strong>Note:</strong> In order to color the text, <i>boxes</i> will output ANSI escape codes. Usually,
             your terminal will interpret them properly. However, many text editors cannot do that, and you may see

_posts/2024-02-17-boxes-v2.3.0-released.md

@@ -19,8 +19,6 @@ of new tests, it is still quite possible that some bugs slipped in. Please bear
 - ANSI color codes are now allowed in box shapes (see
   [colored box shapes]({{ site.baseurl}}/config-syntax.html#colored-shapes)). It's a bit technical, because you
   need to write ANSI color codes, but quite powerful and versatile.
-- In order to properly support colors in every terminal, we now depend on the
-  [ncurses](https://invisible-island.net/ncurses/) library.
 - The new command line options `--color` and `--no-color` can be used to force whether colors are printed by *boxes*.
   The default is to print colors if the terminal is color-capable.
 - Add long options capability to command line. Every existing option stays the same, but can now also be written in
@@ -36,6 +34,8 @@ of new tests, it is still quite possible that some bugs slipped in. Please bear
 
 #### Technical / Internal Changes
 
+- In order to properly support colors in every terminal, we now depend on the
+  [ncurses](https://invisible-island.net/ncurses/) library.
 - Add MacOS to GitHub Actions workflow and support all test categories on MacOS
   by <span class="atmention">[@mathomp4](https://github.com/mathomp4)</span>
 - Removed linker `--wrap` option so unit tests can run on MacOS by

pages/config-best-practices.md

@@ -28,6 +28,7 @@ through this list.
   - `artwork` - It's an ASCII art box, not a simple thing like a box of asterisks or hash characters. When in doubt,
     don't use this tag.
   - `box` - It's a box that goes around the input text, i.e. at most one open side.
+  - `color` - At least one box shape contains invisible ANSI escape codes for coloring.
   - `comment` - A regional comment in a programming language.
   - `large` - A box intended for large content, like figlet fonts, or just lots of text. It wants to be big!
   - `programming` - All comments in a programming language, including boxes which are valid comments. Anything tagged
@@ -35,6 +36,7 @@ through this list.
   - `sign` - An ASCII art figure holding or showing a sign which contains the input text.
   - `simple` - A simple box, normally excluding `artwork`.
   - `speech` - A box which includes a speech bubble.
+  - `unicode` - At least one box shape contains a non-ASCII character.
 
 - **Give Credit Where Credit is Due** – This point is really important. If your box is based on someone else's artwork,
   the original artist must be credited in a `designer` entry, and you must make sure that the person allowed you to