Both Joseph, 26, and May have since paid tribute to Colin on Instagram.
Joseph posted a picture of his younger self at a pool with his dad. His caption was a simple heart emoji.
He also left a comment on the post to thank everyone.
"Dad fought till the end. Much love to everyone," he wrote.
May wrote a touching post about her husband, whom she called "a tough fighter".
"It is hard to say goodbye, so let's begin with 'see you again'. A loving father, a supportive brother, an outgoing uncle, a loyal friend, my husband. Colin is a character on its own. All who personally know him, will know what I'm talking about. He speaks freely and passionately, and that is one of the things that I will miss about him," she wrote.
Pierre Png, 48, and other celebs also took to their Instagram to pay tribute to Colin.
Pierre shared a photo taken with Colin, describing him as a “one-of-a-kind-man”.
“I will miss you uncle [Colin]! Even with your back hurting so much in the last few months and everything you were going through, you still managed to make me laugh. A great tribute by [May] to this one-of-a-kind-man indeed! Thank you for always telling it like it is, along with all the advise you so willingly shared (sic). Rest in peace now , we’ll have that [whiskey emoji] when we meet again Sir!” he wrote .
Similarly, host
Kelly Latimer, 35, also posted a tribute to Colin on her IG Story, referring to him as “Uncle Colin”.