I've been helping a friend work on fansubbing Sketchbook ~full color'S~, and got interested in the manga. However, I realized there's a small problem on your DB with this title. You have two manga listed, but they are actually the same manga.

On the author page, http://www.mangaupdates.com/authors.html?id=2679, there are both listed,
http://www.mangaupdates.com/series.html?id=10870
and
http://www.mangaupdates.com/series.html?id=7822
Now, firstly, those are the same manga by Kobako Totan, but also, the official name of the manga is "Sketchbook", while the anime is titled "Sketchbook ~full color'S~"

If you feel the need to verify this info, snoop around the official anime website under "goods" and you will see the 5 volumes (1 - 4 and some special release tankoubon) there. Have a good day!

Thanks for the alert!

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A just ruler amongst tyrants