Last time I re-stocked on my quilling strips, I was tempted to include some graduated strips in my order. I've never used these before, but I wanted to give them a try. The strips I got are coloured darkest in the centre, gradually fading out to white at either end. This produces quite a gentle colour effect when you roll the strips, much more delicate than the bold solid colours that I normally use.
I used quite a few different techniques here, too: large, open 'P' coils, a 'royal' wheatear husking, and two pinched vortex coils with open centres - all made using the graduated strips.
I guess that's the most wonderful thing about quilling - there's ALWAYS something new to try!!