HBO just released a few official stills from the upcoming season of its popular series True Detective. Season two stars Colin Farrell and Vince Vaughn, and it’s expected to drop sometime this summer.

Farrell told The Los Angeles Times that the mustache he’s sporting is needed for the role. He’s also happy that the natural greys in his hair won’t be hidden on his corrupt cop Ray Velcoro.

“Because of what I do for a living, I haven't gotten my hair cut in a salon in 15 years. Between jobs, I just let it all grow out. I have a lot of gray in my hair and I wanted to have gray hair for True Detective, but it was hard because of dye jobs for other roles. I try to have as blank a canvas as possible when going into a new gig,” Farrell said.

The Dublin-born actor is also a spokes-model these days for Dolce & Gabbana’s male fragrance Intenso – though he admits he’s never been a big fan of dousing himself in scent.

“They were still working on the scent when I came on board. I completely trust the creative movements of Stefano [Gabbana] and Domenico [Dolce]. They have been dressing me for the last decade or so.

“But I didn't know what the scent would be, and I was so relieved when I smelled it for the first time. So relieved! Because if I hated it, I would have had to tell you that I loved it,” said Farrell, who admitted that his real favorite aroma is fresh-cut grass because it reminds him of his youth playing football in Ireland.

Farrell’s rules when it comes to fashion? PJ’s are in, and fur is a definite no-no.

“Man, if I could live in pajamas, I would live in pajamas. I have been caught a few times going to the local coffee shop wearing pj's,” Farrell, 38, said.

“I'm just one of those [guys] who goes for comfort first. Pretty easy. Jeans and T-shirts or shirts. I am low-maintenance…I would not wear a fur coat. I wear leather boots and a leather jacket, but I don’t think I’ll be rocking mink.”

New still of Colin Farrell from HBO's "True Detective."HBO