Thank you so much for that picture! It's perfect! ^^
I couldn't resize it, but it isn't too bad, is it? :3
The dimensions are 1316 x 930, click on the attachment, then click on it again when the viewer pops up. It should open up the full picture in a new tab.
Looking at it again, all of these poison types tend to be some shade of blue, green or purple. It becomes a little homogenous after a while, which makes Ariados stand out that much more. The series could benefit from more brightly "warning" colored poison Pokémon.
Here, have another picture. Probably got this from DA via Google, but I tend to save images and store them without looking back. Therefore, I don't have a source link, but credit definitely goes to Melangetic.
Source material aside, I like this one the most of these attachments because I think it's colored the best. It's very vivid and unified. The shading colors also utilize different hues which keeps it from being too flat. The benefits of experimenting with color far outweigh playing it safe.
But this isn't the Art and Design subforum, so that's enough for today.