layout.css and color.css are missing

Since quite a while I get errors in the webserver log about the purple-pastels theme, saying that layout.css and color.css are missing.

apache error.log:

File does not exist:  /[webroot]/wp-content/themes/purple-pastels/layout.css
File does not exist:  /[webroot]/wp-content/themes/purple-pastels/color.css

I downloaded the source, and a I found out that it could come from print.css:
~/Downloads/purple-pastels$ grep -r layout.css *
print.css:@import url(layout.css);

Esthetically I have problems with an exclamation mark showing in from of a gravitar in the comments sections. Unfortunately I still didn’t find out what could cause this error. I guess it could have something to do with these missing files.

Example page: http://www.krusj.nl/?p=96#comments
It shows that sometimes KrusjMe has an exclamation mark, and other times not. Apparently only in the white comment boxes.

That’s all. 🙂
Anybody an idea how to fix this?