TORONTO - Canada's tallest structure will be glowing orange from sundown Saturday until sunrise Sunday in honour of Jack Layton.

The CN Tower will be lit with the colours of the NDP leader's party to coincide with his funeral, a spokesman at the downtown Toronto tourist attraction said Wednesday.

A social media campaign to turn the tower orange was launched following Layton's death Monday.

"The response is overwhelming," said Toronto's Christiaan Rapcewicz, who spearheaded the initiative. "I'm still getting thank yous and I'm still getting 'We're so proud of you.' It's an incredible feeling right now."

The campaign started with a tweet then grew to the point where a Facebook group now has "likes" from more than 5,000 people, he said.

Rapcewicz said he plans to attend Layton's funeral Saturday afternoon in Toronto and then will get his picture taken against the backdrop of the orange CN Tower.

The service is set to take place at 2 p.m. on Saturday at Roy Thomson Hall in Toronto.

Layton died of cancer at his Toronto home early Monday morning at the age of 61.

His body is lying in state on Parliament Hill today and his casket will then rest "in repose" at Toronto's city hall all day Friday.