Metallic Bottle Theme - foreground and background identical

[rovf]

In metallic-bottle.conf, we find the following definitions:

selection=#000;#c48c65;false;true
preprocessor=#c48c65
other=#c48c65
line_added=#c48c65

This means that if I have a syntactic element styled as preprocessor (for instance, a symbol (:abc) in Ruby source code, and select it with a mouse, foreground and background look identical and I can't see anymore the selected text.