I have an identifier named ASTExpression in an UUAG file.
EclipseFP highlights it incorrectly - AS part is blue and TExpression part is red.
transformArgument is highighted incorrectly too - transform is black and Argument part is red.
See https://github.com/nponeccop/HNC/blob/master/AG/ExpressionBuilder.ag for an example of broken syntax highlighting. It's in utf-8, so you should go to Window-Preferences-General-Content Types-Text and set utf-8 in default encoding field.
I didn't add the UUAG editor myself, but as far as I can see it uses the normal Haskell tokenizer, which explains the issues. Not knowing anything about UUAG, I'm not going to fix it. Pull request/patch welcome!