I am not a lawyer but I would have thought that you could only trademark something in reference to a particular aspect of your business. The lastminute website though currently reads :
lastminute.com”, “lastminute” and the colour (block of magenta) colour are all trademarks owned by Last Minute Network Limited and/or its group companies.
Erm wtf. I know the Easy Group will hunt you down if you use easysomething and use a predominantly orange colour scheme but I don’t think even they actually claim they have trademarked orange itself.
If this sort of nonsense carries with other companies some of my more colourful trousers may have so many copyright notices on that they will start resembling a F1 car….