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On the color, I definitely prefer the light version; much easier to 
read.  Any of the colors actually work, I think.

On the monotone, I actually LIKE the object storage nodes the best, 
though that's not saying much; I don't like the monotone much at all, 
actually, particularly compared with the color.  At small font sizes, I 
don't tink there's enough contrast on the baqckground colors.  The 
content colors are good, though.  That's why the Object Storage nodes 
work, I think.  (Still prefer the color/light version, though.)

Nice job finding this.

----  Nick


On 11/13/2014 8:28 PM, Matt Kassawara wrote:
> Needless to say, our existing diagram color schemes vary by document 
> and sometimes look rather hideous. For example, I used the 
> red-green-blue theme in the installation guide to improve contrast 
> among the networks, but it lacks the civility you would find in other 
> professional documentation. Similar to networking, colors are hard. 
> For example, themes that implement many shades of one or two colors 
> look professional but limit the ability to contrast important items. 
> On the other hand, themes that implement many diverse colors offer 
> many ways to contrast important items, but look harsh. I haven't found 
> a theme that provides a decent balance until Robb Romans (a coworker 
> at Rackspace) pointed out the Solarized theme [1] today. Although 
> somewhat optimized for text, this theme provides several decent 
> dark/light combinations for diagrams requiring less contrast and a 
> series of diverse yet soft colors for diagrams requiring more 
> contrast. After messing around a bit, I came up with a few potential 
> color variants using this theme. Please review the dark/light example 
> for simple diagrams [2] and the diverse color example for 
> complex/contrasty diagrams [3] and provide comments. For the first 
> diagram, indicate which of the controller node, network node, compute 
> node, and block storage node objects look the best (ignore the object 
> storage nodes). For the second diagram, indicate which of the nodes 
> (dark/light) and network colors look best. You can also reject this 
> theme completely. However, if you do, please provide one or more 
> suitable alternatives. I would like to upload a series of revitalized 
> diagrams to the installation guide as soon as possible.
>
> Matt
>
> [1] http://ethanschoonover.com/solarized
> [2] http://23.253.231.218/rpc-diagrams/os-examplearchneutron-hw.png
> [3] http://23.253.231.218/rpc-diagrams/os-examplearchneutron-networks.png
>
>
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