I pulled out the lightest colors from my Distress collection - Shaded Lilac, Squeezed Lemonade, Peacock Feathers, and Tumbled Glass. The yellow almost doesn't show up enough - you'll see below, I ended up using it mostly as an accent.
I did end up using this card above, but only because I was out of time. This was really another test-piece. Anyway, this is a Hero Arts stamp set, which means you might be able to find it practically anywhere that sells craft stuff - I know Michael's has sold Hero Arts in the past, and I imagine they still do - but I got mine from Simon Says Stamp, for the record. (And also for the record, nobody's paying me to say so.) I saw this basic idea on Kristina Werner's holiday card series, and I'll link that at the bottom.
I did give in and buy the small-size Misti this year - that's the book-like thing that helps you position stamps, for those that don't know about it already. (The plastic lid you can see above flips closed - you stick the stamp right onto the lid.) I've used other positioning methods and it's far and away the best. Expensive, though, or I'd have had one a couple of years ago.
I love really simple cards and I love snowflakes and using lots of color, so this was perfect for me.
Here's Kristina's video. I almost bought these nice bright stamp-pads that she was using (which are SSS's own brand) but I realized in time that I had plenty of bright colors already to choose from. I used the Distress pads but I also have some very bright Stampin' Up stamp pads as well. Probably some others, too - bright is kinda my thing, after all!
(Note that while I'm not getting any money from anywhere, I do think Kristina has a deal with SSS - all her supply links usually go to them, so I imagine they're affiliate links.)