THIS month you would never guess that pink isn't usually the colour Bianca Delahoy or Sally Cole would nominate as their favourite.
They both have bright pink hair, are searching for the best pink food and drink recipes, and have decorated Mrs Delahoy's home bright pink.
It's all for a good cause — the two friends are hosting their seventh annual Girls' Night In to raise money for the Cancer Council.
Girls' Night In is held throughout October and encourages women to host a fun night in with their female friends and donate the money they would have spent on a night out to the Cancer Council.
"We're both nurses and we've seen what goes on in the operating theatre," Mrs Delahoy said. ''We've had friends and family struck down by the disease as well and this is a fun way to raise money."
Mrs Delahoy, of Knoxfield, and Mrs Cole, of Upper Ferntree Gully, have supported the initiative since 2006 and this year have a couple of events planned during October.
While Girls' Night In events are traditionally a male-free zone, Mrs Delahoy said the boys had a "little grizzle about being left out".
"They said 'what about us?', so in 2008 we held our first poker game and we get about 40 people to it each year," Mrs Delahoy said.
The pair will also host a pink-themed masquerade party for friends and family this Saturday, and Mrs Delahoy said the event got bigger each year.
"We've got pink food, drinks, games and competitions. And we've had some generous companies in Knox donate prizes for raffles and auctions."
The two women also dyed their hair pink a couple of weeks ago and they've already raised $900, thanks to donations from workmates, friends and family.
Mrs Delahoy said their record total raised was $2800, but they're aiming to round it up to $3000 this year. Although she said it was tough work organising the event, Mrs Delahoy said they would keep on doing it because it was "too much fun to give away". "It's just a party in the end."
Anyone wanting to host a Girls' Night In fund-raiser this month can go to girlsnightin.com.au to find out how.