I made everything a bit bigger. Does that make sense?
The main reason is to have larger images right here in the blog. So I also scaled the last two color images up. It was just as I feared:
When you upload an image into blogger and later on scale the thumbnail up, no matter if in the HTML code or with the mouse in the preview, blogger uses the little thumbnail it created as a base for that. Which means that the up-scaled thumbnail looks terrible.
A solution is to upload the large picture somewhere else (e.g. flickr), and use its web location (or URL) in the blogger-post HTML when specifying the thumbnail. Now you can scale it much better, since it uses this larger image, which obviously has more information in it.
My dear blogger.com team, this is way too much overhead. From what I heard, if you use Wordpress, you can actually upload images to flickr including image description, and have that automatically show up as a post in your blog.
As you can also see, I'm playing with the fonts right now. Please pardon the appearance!