user15530: As you can see the new design just went live. Which means this site has been officially launched! Congratulations! Thank you for your valuable design feedback.
We have also themed the twitter account and newsletter template for this site.
If you see any CSS/styling bugs, please start a new post and tag it with "design" and "bug."
Congrats on the launch and thank you for being an awesome community!

user25568: I think the design could be still improved. 
We could 

We could make the illustration more colorful. Such as instead only one color; we could choose some other colors in combinations. 

Here are some suggestions from web-colors list
$$\begin{array}{c|c|c|c|c}\hline
\textbf{Reds} & \textbf{Yellows} & \textbf{greens}& \textbf{blues}& \textbf{purples}\\\hline
\bbox[red]{\textbf{RED}} & \bbox[Yellow]{\textbf{YELLOW}} & \bbox[limeGreen]{\textbf{LIME-GREEN}}& \bbox[aqua]{\textbf{AQUA}}& \bbox[Fuchsia]{\textbf{FUCHSIA}}\\\hline
\bbox[OrangeRed]{\textbf{ORANGE-RED}} & \bbox[Gold]{\textbf{GOLD}} & \bbox[yellowgreen]{\textbf{YELLOW-GREEN}}& \bbox[DarkTurquoise]{\textbf{DARK-TURQUOISE}}& \bbox[DeepPink]
{\textbf{DEEP-PINK}}\\\hline
\bbox[Tomato]{\textbf{TOMATO}} & \bbox[Goldenrod]{\textbf{GOLDENROD}} & \bbox[OliveDrab]{\textbf{OLIVE-DRAB}}& \bbox[LightSeaGreen]{\textbf{LIHGHT-SEA-GREEN}}& \bbox[MediumVioletRed]{\textbf{MEDIUM-VIOLET-RED}}\\\hline
\bbox[Coral]{\textbf{CORAL}} & \bbox[SandyBrown]{\textbf{SANDY-BROWN}} & \bbox[DarkOliveGreen]{\textbf{DARK-OLIVE-GREEN}}& \bbox[DeepSkyBlue]{\textbf{DEEP-SKY-BLUE}}& \bbox[Purple]{\textbf{PURPLE}}\\\hline
\bbox[Salmon]{\textbf{SALMON}} & \bbox[Peru]{\textbf{PERU}} & \bbox[Olive]{\textbf{OLIVE}}& \bbox[DodgerBlue]{\textbf{DODGER-BLUE}}& \bbox[DarkViolet]{\textbf{DARK-VIOLET}}\\\hline
\bbox[FireBrick]{\textbf{FIREBRICK}} & \bbox[Orange]{\textbf{ORANGE}} & \bbox[ForestGreen]{\textbf{FOREST-GREEN}}& \bbox[CornflowerBlue]{\textbf{CORNFLOWER-BLUE}}& \bbox[Indigo]{\textbf{INDIGO}}\\\hline 
\bbox[DarkRed]{\textbf{DARK-RED}} & \bbox[DarkOrange]{\textbf{DARK-ORANGE}} & \bbox[Green]{\textbf{GREEN}}& \bbox[SteelBlue]{\textbf{STEELBLUE}}& \bbox[Pink]{\textbf{PINK}}\\\hline 
\bbox[IndianRed]{\textbf{INDIAN-RED}} & \bbox[Moccasin]{\textbf{MOCCASIN}} & \bbox[DarkGreen]{\textbf{DARK-GREEN}}& \bbox[MidnightBlue]{\textbf{MIDNIGHT-BLUE}}& \bbox[RosyBrown]{\textbf{ROSY-BROWN}}\\\hline 
\end{array}$$  
(The array doesn't indicate any combination, is used to only save the space.)
Here I've shown some samples. 
Sample-1: Bright background; only lines colored
 
Sample-2: Brighter background; shapes fill-coloured
 
Sample-3: Dark background, Fill-coloured, lines black, bright sharpening.

Sample-4: Dark background, fill-coloured, lines white. 



At the side-space (at left and right side of the text area); we could add some light watermarks. 

For this purpose; I would prefer something structural to 'see'; for example the image below: 

(Sample originally inspired from an answer by user@WYSIWYG  in the question site-design feedback,  original photo url) 
But not only some arthropods; structures from other animals, plants , fungi , histologic section, TEM/ SEM electron micrograph and chemical-structures too, could be included. 

15530: <p>As you can see the new design just went live. Which means this site has been officially launched! Congratulations! Thank you for your valuable <a href="https://biology.meta.stackexchange.com/questions/3005/site-design-for-biology-community">design feedback</a>.</p>

<p>We have also themed the <a href="https://twitter.com/stackbiology" rel="nofollow noreferrer">twitter</a> account and newsletter template for this site.</p>

<p>If you see any CSS/styling bugs, please start a new post and tag it with "design" and "bug."</p>

<p>Congrats on the launch and thank you for being an awesome community!</p>
 25568: <p>I think the design could be still improved. </p>

<p>We could </p>

<ol>
<li>We could make the illustration more colorful. Such as instead only one color; we could choose some other colors in combinations. </li>
</ol>

<p>Here are some suggestions from <a href="https://en.wikipedia.org/wiki/Web_colors" rel="nofollow noreferrer">web-colors list</a></p>

<p>$$\begin{array}{c|c|c|c|c}\hline
\textbf{Reds} &amp; \textbf{Yellows} &amp; \textbf{greens}&amp; \textbf{blues}&amp; \textbf{purples}\\\hline
\bbox[red]{\textbf{RED}} &amp; \bbox[Yellow]{\textbf{YELLOW}} &amp; \bbox[limeGreen]{\textbf{LIME-GREEN}}&amp; \bbox[aqua]{\textbf{AQUA}}&amp; \bbox[Fuchsia]{\textbf{FUCHSIA}}\\\hline
\bbox[OrangeRed]{\textbf{ORANGE-RED}} &amp; \bbox[Gold]{\textbf{GOLD}} &amp; \bbox[yellowgreen]{\textbf{YELLOW-GREEN}}&amp; \bbox[DarkTurquoise]{\textbf{DARK-TURQUOISE}}&amp; \bbox[DeepPink]
{\textbf{DEEP-PINK}}\\\hline
\bbox[Tomato]{\textbf{TOMATO}} &amp; \bbox[Goldenrod]{\textbf{GOLDENROD}} &amp; \bbox[OliveDrab]{\textbf{OLIVE-DRAB}}&amp; \bbox[LightSeaGreen]{\textbf{LIHGHT-SEA-GREEN}}&amp; \bbox[MediumVioletRed]{\textbf{MEDIUM-VIOLET-RED}}\\\hline
\bbox[Coral]{\textbf{CORAL}} &amp; \bbox[SandyBrown]{\textbf{SANDY-BROWN}} &amp; \bbox[DarkOliveGreen]{\textbf{DARK-OLIVE-GREEN}}&amp; \bbox[DeepSkyBlue]{\textbf{DEEP-SKY-BLUE}}&amp; \bbox[Purple]{\textbf{PURPLE}}\\\hline
\bbox[Salmon]{\textbf{SALMON}} &amp; \bbox[Peru]{\textbf{PERU}} &amp; \bbox[Olive]{\textbf{OLIVE}}&amp; \bbox[DodgerBlue]{\textbf{DODGER-BLUE}}&amp; \bbox[DarkViolet]{\textbf{DARK-VIOLET}}\\\hline
\bbox[FireBrick]{\textbf{FIREBRICK}} &amp; \bbox[Orange]{\textbf{ORANGE}} &amp; \bbox[ForestGreen]{\textbf{FOREST-GREEN}}&amp; \bbox[CornflowerBlue]{\textbf{CORNFLOWER-BLUE}}&amp; \bbox[Indigo]{\textbf{INDIGO}}\\\hline 
\bbox[DarkRed]{\textbf{DARK-RED}} &amp; \bbox[DarkOrange]{\textbf{DARK-ORANGE}} &amp; \bbox[Green]{\textbf{GREEN}}&amp; \bbox[SteelBlue]{\textbf{STEELBLUE}}&amp; \bbox[Pink]{\textbf{PINK}}\\\hline 
\bbox[IndianRed]{\textbf{INDIAN-RED}} &amp; \bbox[Moccasin]{\textbf{MOCCASIN}} &amp; \bbox[DarkGreen]{\textbf{DARK-GREEN}}&amp; \bbox[MidnightBlue]{\textbf{MIDNIGHT-BLUE}}&amp; \bbox[RosyBrown]{\textbf{ROSY-BROWN}}\\\hline 
\end{array}$$  </p>

<p>(The array doesn't indicate any combination, is used to only save the space.)</p>

<p>Here I've shown some samples. </p>

<p>Sample-1: Bright background; only lines colored</p>

<p><a href="https://i.stack.imgur.com/MdxXI.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/MdxXI.png" alt="Sample-1: Bright background, lines colored"></a> </p>

<p>Sample-2: Brighter background; shapes fill-coloured</p>

<p><a href="https://i.stack.imgur.com/lg3Bt.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/lg3Bt.png" alt="Bright background, shape fill-coloured"></a> </p>

<p>Sample-3: Dark background, Fill-coloured, lines black, bright sharpening.<br>
<a href="https://i.stack.imgur.com/OKxqA.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/OKxqA.png" alt="enter image description here"></a></p>

<p>Sample-4: Dark background, fill-coloured, lines white. 
<a href="https://i.stack.imgur.com/Lu2VG.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/Lu2VG.png" alt="White lines"></a></p>

<hr>

<ol start="2">
<li>At the side-space (at left and right side of the text area); we could add some light watermarks. </li>
</ol>

<p>For this purpose; I would prefer something structural to 'see'; for example the image below: </p>

<p><a href="https://i.stack.imgur.com/t5VFg.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/t5VFg.png" alt="animals"></a>
(Sample originally inspired from an <a href="https://biology.meta.stackexchange.com/questions/3005/site-design-for-biology-community/3024#3024">answer</a> by user@WYSIWYG  in the <a href="https://biology.meta.stackexchange.com/questions/3005/site-design-for-biology-community">question site-design feedback</a>,  <a href="https://i.stack.imgur.com/CRCw7.png" rel="nofollow noreferrer">original photo url</a>) </p>

<p>But not only some arthropods; structures from other animals, plants , fungi , histologic section, TEM/ SEM electron micrograph and chemical-structures too, could be included. </p>
