I was wondering if I can tint dark chocolate ganache black?? Has anyone tried this? And would I use candy color or gel icing color? TIA

sure you could tint it. Gel colors should work fine.

I think I tried gel colors once and it seized. It may have been the brand of chocolate, or cream, or the recipe I used...I dont know. But I have always used dyes for chocolate for ganache.

Ya I was wondering about seizing which it why I thought maybe candy colors would be better.

yep, works good

Oil-based colours would be better if you'll need to use a lot for bold/dark colour (less risk of seizing), but I have had success several times with Wilton gel colours (to make white chocolate ganache grass-green for example) I add the food colouring to the cream while heating up to boil then tip the coloured cream over the chocolate. I've had ganache turn oily and horrible when I've mixed gel colour in at the end. Here's a pic of my green ganache, just for interest sake: